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.NET W^

  • online archived Core .NET by Jon Skeet [pdf] (dzone.com)
  • saved .NET Format String Quick Referencee [pdf] (john-sheehan.com)
  • saved .NET Framework 4 and Extensions [pdf] (msdn.microsoft.com)
  • online archived Regular Expression Cheat Sheet (.NET) [html] (regexlib.com)
Official website: dotnet.microsoft.com

Ada W^

  • online saved Ada 2022 Reference Card by Bent Bracke [pdf, latex] (github.com/bracke)
  • saved Ada Reference Card by DAINA [pdf]
  • saved Ada Syntax Card by DAINA [pdf]

ADO.NET W^

  • online archived ADO.NET Entity Framework: Object-Relational Mapping and Data Access by Dane Morgridge [pdf] (dzone.com)
See also: .NET

Adobe Systems W^

  • online saved archived The Ultimate Adobe Creative Cloud Keyboard Shortcuts Cheat Sheet by Jamie Spencer [html, jpg] (makeawebsitehub.com)
  • online saved archived Adobe CC Keyboard Cheat Sheet For Web Designers 2016 by Jamie Spencer [html, jpg] (makeawebsitehub.com)
  • online saved archived Adobe CC Photographers Keyboard Shortcuts Cheat Sheet 2016 by Jamie Spencer [html, jpg] (makeawebsitehub.com)
Official website: adobe.com

Adobe Acrobat W^

Cheat sheet:
  • saved Adobe Acrobat Quick Reference, Abobe Acrobat 8 Cheat Sheet [pdf]
  • online saved archived 2015 Adobe Acrobat DC Keyboard Shortcuts Cheat Sheet by Jamie Spencer [html, jpg] (makeawebsitehub.com)
  • saved Acrobat Pro DC by Ton Haarmans [pdf] (wideopenwindows.be)
Official website: adobe.com/products/acrobat/
See also: Adobe Systems

AJAX - Asynchronous JavaScript And XML W^

Algebra W^

See also: Math

Amazon Web Services (AWS) W^

Official website: aws.amazon.com

Android W^

Official website: www.android.com

Apache W^

Official website: httpd.apache.org

Apache Ant W^

Official website: ant.apache.org
See also: Apache

Apache Camel W^

  • online archived Enterprise Integration Patterns W^ with Apache Camel by Claus Ibsen [pdf] (dzone.com)
Official website: camel.apache.org
See also: Apache, Design Pattern

Apache Cassandra W^

  • online archived Apache Cassandra: A Fault-Tolerant, Massively Scalable NoSQL Database by Brian O’Neill [pdf] (dzone.com)
Official website: cassandra.apache.org

Apache Solr W^

See also: Apache, Lucene

APT - Advanced Packaging Tool W^

See also: Debian

Arduino W^

Official website: www.arduino.cc

ASCII - American Standard Code for Information Interchange W^

See also: Characters

ASP - Active Server Pages W^

  • online archived Core ASP.NET by Holger Schwichtenberg [pdf] (dzone.com)
  • online saved saved archived ASP / VBScript Cheat Sheet by Dave Child [png, pdf] (addedbytes.com)
  • saved ASP.NET 2.0 Page Life Cycle & Common Events [pdf] (john-sheehan.com)
  • online archived Getting Started with ASP.NET MVC 1.0 by Simone Chiaretta and Keyvan Nayyeri [pdf] (dzone.com)
See also: .NET, WebMatrix

Assembly Language W^

Cheat sheets:
  • online saved Intel Assembly 80x86 CodeTable by Roger Jegerlehner [pdf] (www.jegerlehner.ch/intel)
  • online saved archived Win32 Assembly Cheat Sheet by Peter Kankowski [png] (strchr.com)
  • online archived gcc x86 Assembly Quick Reference ("Cheat Sheet") by Peter O. Lawlor [html] (cs.uaf.edu)
  • saved Intel x86-64 Architecture by Michael Stumpfl [pdf]
  • saved 6502 (65xx) Microprocessor Instant Reference Card (instruction set and conversion) by James D. Lewis [pdf]
  • saved SY6500 Instruction Set Summary and Assembler Directives (6502 - Reference Cards) by ATARI [pdf]
Documentation, Books, Articles:
  • online Assembly languages [html, pdf] (wikibooks.org)
  • archived ASM Community • The Assembly Language Resource [html] (asmcommunity.net)
  • online online saved archived Programming from the Ground Up by Jonathan Bartlet; Edited by Dominick Bruno, Jr [html, pdf]
  • online saved archived PC Assembly Language by Paul A. Carter [pdf] (drpaulcarter.com)

Astronomy W^

AWK - Aho, Weinberger and Kernighan programming language W^

Azure (Azure Services Platform, Windows Azure Platform) W^

  • online archived Cloud Computing with Windows Azure Platform by Brian H. Prince [pdf] (dzone.com)

Bazaar (formerly Bazaar-NG, commandline tool bzr) - distributed revision control system W^

Official website: bazaar-vcs.org/
See also: CVS, Git, SVN

Berkeley DB (BDB, Oracle Berkeley DB) W^

Big OW^

  • online saved BIG-O-CHEATSHEET [png] (bigocheatsheet.com)
  • online saved Big-O Poster by ro31337 [pdf] (github.com)

BIRT - Business Intelligence and Reporting Tools Project (BIRT Project) W^

Official website: eclipse.org/birt/
See also: Eclipse

Blogger W^

Official website: www.blogger.com

Blueprint - CSS framework W^

Official website: www.blueprintcss.org/
See also: CSS

BPEL - Web Services Business Process Execution Language (WS-BPEL) W^

Official website: OASIS WSBPEL TC Webpage

Business Process Modeling (BPM) W^ and Business Process Modelling Notation (BPMN) W^

Official website: bpmn.org

C W^

See also: C#, C++, GDB, Objective-C, OpenMP

C# W^

See also: C, C++, Java, Objective-C

C++ W^

Calculus and Analysis W^

See also: Math

Camera W^

Catalyst W^

Cheat sheets:
  • saved saved Catalyst Quick Reference Card by Andrew Ford [pdf]
Documentation, Books, Articles:
  • online Catalyst::Manual [pdf] (cpan.org)
Official website: catalystframework.org
See also: Perl

Characters W^

See also: ASCII

Chef W^

  • online Chef: An Open Source Tool for Scalable Cloud and Data Center Automation by Jeffrey Hulten [pdf] (dzone.com)
Official website: www.opscode.com/chef/

Chemistry W^

chmod W^

See also: Linux, Unix

Clojure W^

Official website: http://clojure.org/
See also: Erlang, Haskell

Cloud Computing W^

  • online Getting Started with Cloud Computing by Daniel Rubio [html] (dzone.com)
Official websites:

Cocoa W^

  • saved Cocoa Framework (iOS SDK 3.0) by Alexey Nazaroff [pdf]
See also: Mac OS X, Objective-C

ColdFusion W^

  • online ColdFusion Cheat Sheet [html] (petefreitag.com)
  • online CFSCRIPT ColdFusion Cheat Sheet [html] (petefreitag.com)
  • online Getting Started with ColdFusion 9 by Terry Ryan [pdf] (dzone.com)
  • online Getting Started with Adobe ColdFusion Builder by Terry Ryan [pdf] (dzone.com)
  • online Leveraging ColdFusion 9 Exposed Services from Java by Mark Mandel [pdf] (dzone.com)
  • online Adobe® ColdFusion Web Services for PHP Programmers by Marco Tabini [pdf] (dzone.com)
  • online ColdFusion Builder 2: Faster Coding, Less Errors by Terry Ryan [pdf] (dzone.com)
See also: Adobe Systems

Colour W^

Computer Science W^

Continuous Integration (CI) W^

Countries W^

Cron W^

  • online archived Cron cheatsheet by Rico (@rstacruz) [html] (devhints.io)

CSS - Cascading Style Sheets W^

  • saved CSS in one page [html] (css.su)
  • saved CSS Level 1 Quick Reference DeepX Ltd [pdf] (refcards.com)
  • saved CSS Level 2 Quick Reference Benjamin Jung [pdf] (refcards.com)
  • online saved archived 2016 CSS Cheat Sheet Infographic by Jamie Spencer [html, jpg] (makeawebsitehub.com)
  • online archived saved saved CSS Cheat Sheet by Dave Child [html, png, pdf] (cheatography.com)
  • online archived CSS Cheat Sheet [html] (petefreitag.com)
  • online archived CSS Properties and Values by Dave Child [html] (elizabethcastro.com)
  • saved CSS 2 - Quick Reference Guide [pdf] (veign.com)
  • saved CSS2.1 Quick Reference Card [pdf] (explainth.at)
  • saved Apple’s CSS Cheat Sheet [html.zip] (apple.com)
  • online archived CSS CHEAT SHEET [html] (lesliefranke.com)
  • saved Cascading Style Sheets 1.0 [pdf] (digilife.be)
  • online archived CSS Property Index [html] (blooberry.com)
  • archived CSS Shorthand Guide [html] (dustindiaz.com)
  • online saved saved XPath, CSS, DOM and Selenium: The Rosetta Stone by Michael Sorens [pdf: Locators table, Locators groups] (simple-talk.com)
  • online archived CSS Cheat Sheet by Robert Duncan [html] (simplehtmlguide.com)
  • online saved saved archived Ultimate CSS Cheatsheet by Matt Ahlgren [png, pdf] (websitehostingrating.com)
  • online archived Awesome CSS3 Cheatsheet by Julien Le Coupanec @LeCoupa [html] (github.com/LeCoupa)

curl (cURL, Curl) W

Official website: curl.se (github.com/curl)

CVS - Concurrent Versions System W^

See also: Bazaar, Git, SVN (Subversion)

Dart W

Official website: dart.dev

Datalog W

DB2 (IBM DB2) W^

  • online saved archived Db2 Cheat Sheet for development by Andres Gomez Casanova [pdf] (github.com/angoca/)
  • online archived DB2 cheat sheet by Alex Staveley [pdf] (dublintech.blogspot.com)
  • online archived The A to Z of DB2 by Alex Staveley [pdf] (dublintech.blogspot.com)

db4o W^

Official website: db4o.com

Debian W^

See also: Linux, Unix

Delphi W^

Design Pattern W^

Django W^

See also: Python

Docker W

Official website: docker.com

Doctrine W^

See also: PHP

Doctypes W^

DOM - Document Object Model W^

  • saved W3C DOM in one page [html] (w3cdom.org)
  • online saved saved XPath, CSS, DOM and Selenium: The Rosetta Stone by Michael Sorens [pdf: Locators table, Locators groups] (simple-talk.com)
Official website: http://www.w3.org/DOM/

Domain-driven design (DDD) W^

Official website: dddcommunity.org

DOT language W^

  • saved Dot by Sridhar Sarnobat [pdf]
Documentation, Books, Articles:
  • online The DOT Language by Graphviz - Graph Visualization Software [html] (graphviz.org)

Drupal W^

Official website: drupal.org

DTD - Document Type Declaration W^

Eclipse W^

  • saved saved saved Eclipse CDT Keyboard Shortcuts Cheat Sheet by Etienne Savard [pdf, png 300 dpi, png 600 dpi] (symbiosoft.net)
  • online saved saved Eclipse Keyboard Shortcuts by Jesper Kamstrup Linnet [pdf, rtf] (eclipse-tools.sourceforge.net)
  • online saved Eclipse CDT 8.0 Cheat Sheet [pdf] (triada.si)
  • online Getting Started with Eclipse by Ed Burnette & Adam Houghton [pdf] (dzone.com)
  • online Getting Started with Eclipse RCP by James Sugrue [pdf] (dzone.com)
  • online Eclipse Plug-in Development by James Sugrue [pdf] (dzone.com)
  • online Eclipse Modeling Framework: Essential EMF by Ed Merks and James Sugrue [pdf] (dzone.com)
  • online Getting Started with MyEclipse by Riyad Kalla & Jens Eckels [pdf] (dzone.com)
  • online Eclipse Tools for Spring: The SpringSource Tool Suite by Gordon Dickens, Chariot Solutions [pdf] (dzone.com)
Official website: eclipse.org
See also: BIRT, Java, NetBeans

Ed - UNIX Text Editor W^

EJB - Enterprise JavaBean W^

Official website: java.sun.com/products/ejb/
See also: Java

Emacs W^

Erlang W^

See also: Clojure, Haskell

F# W^

Official website: F# at Microsoft Research

Fedora W^

Official website: fedoraproject.org
See also: Red Hat, Linux, rpm

Feed (Web Feed) W^: AtomW^, RSS W^

See also: XML

File W^

Firefox W^

FitNesse W^

Official website: http://www.fitnesse.org/

Firefox Add-ons W^

Official website: http://addons.mozilla.org/

Fonts W^

Fortran W^

See also: GDB, OpenMP

Freeware W^

FTP - File Transfer Protocol W^

GDB - GNU Debugger W^

See also: C, C++, Fortran

Geometry W^

See also: Math

Gift W^

Gimp W^

Official website: www.gimp.org
See also: Photoshop

Git W^

Cheat sheets:
  • online saved archived Git cheat sheet (the most important and commonly used Git commands for easy reference) [pdf] (education.github.com)
  • online saved saved saved GitCheatSheet by Zack Rusin [html, png, pdf, svg] (git.or.cz)
  • online saved saved saved saved Git cheat sheet, extended edition prepared by Jan Krueger [svg front, svg back, pdf, pdf.zip] (git.or.cz)
  • online saved Git Quick Reference by Juan Pablo Justiniano [pdf] (jpjustiniano.wordpress.com)
  • online saved Git cheat sheet [pdf] (git-tower.com)
  • online archived Getting Started with Git by Matthew McCullough [pdf] (dzone.com)
  • online saved archived Top 20 Git Commands With Examples by Sahiti Kappagantula [html] (dzone.com)
  • online online saved archived archived Git Cheat Sheet - GitHub Training [pdf] (training.github.com)
  • online saved Git for Subversion Users - A Cheat Sheet by Tobias Günther [pdf] (git-tower.com)
  • online saved archived The Simple Git Cheat Sheet – A Helpful Illustrated Guide [pdf] (finxter.com)
  • online saved archived Basic Git commands [html] (atlassian.com)
  • online archived Git for the lazy [html] (spheredev.org)
  • online archived Git from the inside out by Mary Rose Cook [html] (codewords.recurse.com)
  • online archived Common Git Commands by Brian Kerr [html] (guides.beanstalkapp.com/)
  • online archived 13 Git Commands Every Developer Must Know by Vikash Koushik [html] (rovitpm.com)
  • online saved saved archived GIT Bash Commands by Adam Lusted /etoxin/ [html, md] (github.com)
  • saved git memory knots (git commands extremely short cheat sheet) by Alexander Krassotkin [html] (cheat-sheets.org)
  • online online saved archived archived Git Cheat Sheet [pdf] (atlassian.com)
  • online saved archived Git Cheat Sheet by GitLab [pdf] (gitlab.com)
  • online archived Yet Another Git Cheatsheet by Dumb Down Demistifying Dev (henryong92) [html] (dev.to)
  • online archived Start a new git repository by Karl Broman [html] (kbroman.org)
  • online archived Oh Shit, Git!?! by Katie Sylor-Miller (ksylor) [html] (ohshitgit.com)
  • online archived Git: Cheat Sheet (advanced) by Maxence Poutord (maxpou) [html] (dev.to)
  • online archived Git Cheat Sheet: Commands and Best Practices by Simon Maple [html] (jrebel.com)
  • online archived tldr git [html] (cheat-sheets.org)
    See also: git init, git clone, git add, git status, git commit, git remote, git push, git pull, etc.
  • online archived Awesome Git Cheatsheet by Julien Le Coupanec @LeCoupa [html] (github.com/LeCoupa)
Documentation, Books, Articles:
  • online archived Git /The official Git site/ [html] (git-scm.com)
  • online saved archived Pro Git book, written by Scott Chacon and Ben Straub [pdf] (git-scm.com)
  • online archived Official Git tutorial [html] (kernel.org)
  • online archived Everyday GIT With 20 Commands Or So [html] (kernel.org)
  • online archived Git User’s Manual (for version 1.5.3 or newer) [html] (kernel.org)
  • online archived Start using Git on the command line [html] (gitlab.com)
Official website: git-scm.com
See also: Bazaar, CVS, SVN.

Gmail W^

Official website: gmail.com
See also: Google

Go (Golang) W^

Cheat sheets:
  • online archived Go cheatsheet [html] (devhints.io)
  • online saved saved archived Go Cheat Sheet by a8m [html, odt, pdf] (github.com/a8m/)
  • online archived tldr go [html] (cheat-sheets.org). See also: tldr go *
  • online archived Awesome Golang Cheatsheet by Julien Le Coupanec @LeCoupa [html] (github.com/LeCoupa)
Documentation, Books, Articles:
  • online archived A tour of Go [html] (tour.golang.org)
  • online archived Golang wiki [html] (github.com/golang/go/)
  • online archived Awesome Go [html] (awesome-go.com)
  • online archived Go by Example by @mmcgrana [html] (gobyexample.com)
  • online archived Effective Go [html] (golang.org)
  • online JustForFunc: Programming in Go by Francesc Campoy [video] (youtube.com)
  • online archived Go Code Review Comments (Style Guide) [html] (github.com/golang/go/)
  • online archived Your basic Go by Stefan [html] (yourbasic.org/golang/)
Official website: golang.org

Google W^

Official website: http://www.google.com/

Google App Engine W^

Official website: appengine.google.com
See also: Cloud Computing

Google Chrome W^

See also: Google

Google Maps W^

Official website: maps.google.com
See also: Google

Grails W^

Official website: grails.org
See also: Java

Griffon W^

Official website: griffon.codehaus.org
See also: Java

Groovy W^

Official website: groovy.codehaus.org
See also: Java

Guitar W^

See also: Music

GWT - Google Web Toolkit W^

Official website: gwtproject.org
See also: AJAX, Google, Java, JavaScript

HAProxy W^

Cheat sheets:
  • online saved archived HAProxy® Configuration Reference Card – version 1.0 by Zenetys [pdf] (zenetys.com)
  • online saved archived HAProxy® Troubleshooting Reference Card – version 1.0 by Zenetys [pdf] (zenetys.com)
Documentation, Books, Articles:
  • online archived HAProxy version 2.2.7 - Starter Guide [html] (cbonte.github.io)
  • online archived HAProxy version 2.2.7 - Configuration Manual [html] (cbonte.github.io)
  • online archived HAProxy version 2.2.7 - Management Guide [html] (cbonte.github.io)
Official website: haproxy.org

Hardware W^

Hadoop W^

  • online archived Getting Started with Apache Hadoop by Eugene Ciurana and Masoud Kalali [pdf] (dzone.com)
  • online archived Apache Hadoop Deployment: A Blueprint for Reliable Distributed Computing by Eugene Ciurana [pdf] (dzone.com)
Official website: http://hadoop.apache.org/
See also: Apache

Haskell W^

Official website: http://haskell.org/
See also: Clojure, Erlang

HBase W^

  • online Apache HBase: The NoSQL Database for Hadoop and Big Data by Alex Baranau and Otis Gospodnetic [pdf] (dzone.com) archived
Official website: hbase.apache.org
See also: Apache

Hibernate W^

Official website: hibernate.org
See also: Java

.htaccess W^

See also: Apache, mod_rewrite

HTML - HyperText Markup Language W^

Official website: http://www.w3.org/html/

HTTP - Hypertext Transfer Protocol W^

Illustrator W^

Image W^

  • online saved archived Image Formats Cheat Sheet – All you need to know about JPEGs, TIFFS, GIFs, PNGs & BMPs by Jamie Spencer [html, jpg] ()

InDesign W^

  • online saved InDesign CC 2015 by Ton Haarmans [pdf] (wideopenwindows.be)

Inkscape W^

Official website: inkscape.org

IntelliJ IDEA W^

Official website: jetbrains.com/idea/
See also: Java

International Phonetic Alphabet W

IRC - Internet Relay Chat W^

  • online saved archived wikiHow:IRC Cheat Sheet [html, pdf] (wikihow.com)

Java W^

  • online archived Core Java by Cay S. Horstmann [pdf] (dzone.com)
  • online archived Java 1.5 Cheat Sheet [html] (petefreitag.com)
  • saved JAVA Language Quick Reference by Jialong He [pdf] (tiger.la.asu.edu)
  • saved JAVA Programming Guide - Quick Reference by Pinnacle Software Solutions [pdf] (digilife.be)
  • saved SAX 2.0 for Java (Core) by deepx [pdf] (digilife.be)
  • saved SAX 2.0 for Java (Extensions and Helpers) by deepx [pdf] (digilife.be)
  • saved Java Quick Reference [pdf] (digilife.be)
  • online archived Java cheat sheet for C++ programmers by Erich Kaltofen [html] (www4.ncsu.edu/%7Ekaltofen/)
  • online archived Core Java Concurrency by Alex Miller [pdf] (dzone.com)
  • online archived Using XML in Java by Masoud Kalali [pdf] (dzone.com)
  • online archived Getting Started with Java GUI Development by James Sugrue [pdf] (dzone.com)
  • online archived tldr java [html] (cheat-sheets.org). See also:tldr *java*
  • online archived Awesome Java Cheatsheet by Julien Le Coupanec @LeCoupa [html] (github.com/LeCoupa)
Documentation, Books, Articles:
  • online archived Java SE 6 Documentation [html] (oracle.com)

Java HotSpot Virtual Machine W^

  • online archived Java HotSpot VM Options by Oracle [pdf] (oracle.com)

Java EE - Java Platform, Enterprise Edition W^

Cheat sheets:
  • online archived Getting Started with Java EE Security by Masoud Kalali [pdf] (dzone.com)
  • online archived Contexts and Dependency Injection for the Java EE Platform by Norman Richards [pdf] (dzone.com)
  • online archived Java Enterprise Edition 6: The Most Elegant Enterprise Java Yet by Andrew Lee Rubinger [pdf] (dzone.com)
Documentation, Books, Articles:
  • online JavaTM Platform, Enterprise Edition 6 API Specification [html] (oracle.com)
See also: Java

Java Persistence API (JPA) W^

See also: Java

JavaScript W^

JavaServer Faces (JSF) W^

See also: Java, RichFaces, Seam

JBoss W^

See also: Java

JDBC - Java Database Connectivity W^

See also: Java

Jetty W^

  • online archived Jetty: A Lightweight, Open-Source Web Server and Servlet Container by Jos Dirksen [pdf] (dzone.com)

jQuery W^

JSP - JavaServer Pages W^

See also: Java

JUnit W^

Official website: junit.org
See also: Java

Julia W^

  • online saved archived The Fast Track to Julia / A quick and dirty overview of Julia by Freepik [pdf] (juliadocs.github.io)
  • online saved online saved Julia Reference Card by John Lynch [pdf, odt] (github.com)
  • online saved Julia Colors by John Lynch [odt] (github.com)
  • online archived tldr julia [html] (cheat-sheets.org)
Official website: julialang.org

Kotlin W

Official website: kotlinlang.org

Kubernetes W^

  • online archived kubectl Cheat Sheet [html] (kubernetes.io)
  • online archived Awesome Kubernetes Cheatsheet by Julien Le Coupanec @LeCoupa [html] (github.com/LeCoupa)
Official website: kubernetes.io

Languages W^

LaTeX W^

See also: MathML, TeX, LaTeX-Suite

LaTeX-Suite (aka Vim-LaTeX)

Official website: vim-latex.sourceforge.net/
See also: LaTeX, Vim

less W^

Linux W^

  • online TLDR Pages [html] (cheat-sheets.org)
  • online archived Most used commands [html] (cheat-sheets.org)
  • online archived Linux Command Line Tips [html] (pixelbeat.org)
  • online archived Linux Shortcuts and Commands [html] (linuxshortcuts.shtml)
  • saved saved Unix/Linux Command Cheat Sheet by Jacob [pdf] (fosswire.net)
  • saved The One Page Linux Manual by Squadron [pdf] (homepage.powerup.com.au/~squadron/, digilife.be)
  • saved Linux Administrator's Quick Reference by Jialong He [pdf] (tiger.la.asu.edu)
  • saved Linux System Calls Quick Reference by Jialong He [pdf] (tiger.la.asu.edu)
  • saved Linux Security Quick Reference by Dave Wreski & Benjamin Thomas [pdf] (tiger.la.asu.edu, digilife.be)
  • saved Command Line Interface Commands [jpg]
  • saved A very brief guide to Linux by C. J. Rennie [html] (www.physics.usyd.edu.au/~rennie/)
  • online archived Linux Tutorial - Cheat Sheet by Ryan Chadwick [html] (ryanstutorials.net)
  • saved Unix/Linux Command Reference [jpg] (makeuseof.com)
  • online saved saved archived Linux Commands Cheat Sheet in Black & White by Bobbin Zachariah [pdf] (linoxide.com)
  • online saved saved saved saved saved saved archived [Linux|CLI|Ubuntu] Command line cheat sheet by Patrick Kerwood [gif] (linuxbloggen.dk)
  • online saved archived Linux Command Line Cheat Sheet by DaveChild [pdf] (cheatography.com)
  • online saved saved archived Linux Cheatsheet by Muppix [html, pdf] (muppix.co)
  • online saved saved archived Basic Linux Commands by Muppix [html, pdf] (muppix.co)
  • online saved archived Linux Essential Terminal Commands by Muppix [html, pdf] (muppix.co)
  • online saved archived Linux Commands Cheat Sheet by Hitesh Jethva [html] (pcwdld.com)
  • online archived Linux Shell Commands by Cardiff School of Computer Science & Informatics [html] (docs.cs.cf.ac.uk)

Lisp W^

  • online saved saved saved saved saved saved saved Common Lisp Quick Reference by Bert Burgemeister [pdf: a4 booklet all, a4 booklet four, a4 consec, letter booklet all, letter booklet four, letter consec; tar.gz (LaTeX source)] (clqr.boundp.org)

Logic W^

Lotus Domino W^

Lua W^

Cheat sheets, reference cards, reference sheets, crib sheets:
Documentation, books, articles:
Official website: lua.org

Lucene W^

Cheat sheets, reference cards, reference sheets, crib sheets:
Documentation, books, articles:
Official website: lucene.apache.org
See also: Apache, Apache Solr

Mac, Macintosh W^

  • online saved Mac-friendly Terminal Cheat Sheet [pdf] (alexyoung.org)
See also: Mac OS X

Mac OS X W^

Official website: apple.com/macosx/

Machine LearningW^

  • online archived Big Data Machine Learning: Patterns for Predictive Analytics by Ricky Ho [pdf] (dzone.com)

Maple W^

Markdown (CommonMark) W^

CommonMark: commonmark.org/
CommonMark Spec: spec.commonmark.org/

Math, Mathematics W^

  • online archived Mathematical Symbols [html] (techtarget.com)
  • online online saved archived Table of Laplace Transforms W^ by Paul Dawkins [pdf, html] (tutorial.math.lamar.edu)
  • online saved MATH CHEAT SHEET by Cliff Notes [pdf] (onestopgre.com)
  • saved MATH 1401 SPRING 2000 CHEAT SHEET FINAL by JAN MANDEL [pdf]
  • online saved Mathematics Cheat Sheet for Population Biology by James Holland Jones [pdf] (stanford.edu/~jhj1/)
  • online saved saved Useful Inequalities W^ by Laszlo Kozma [pdf, ps.gz] (lkozma.net)

Mathematica W^

MathML - Mathematical Markup Language W^

Official website: w3.org/Math/
See also: XHTML, XML, XML Schema, XPath XSL, XSLT

Mathomatic W^

Official website: www.mathomatic.org

MATLAB W^

Maven (Apache Maven) W^

Official website: maven.apache.org
See also: Apache, Java

Maxima W^

Official website: maxima.sourceforge.net

MFC - Microsoft Foundation Class Library W^

Microformats W^

Official website: http://microformats.org/

Microsoft Excel - Microsoft Office Excel and VBA - Visual Basic for Applications W^

Microsoft Office W^

  • online online saved saved Quick Reference for Math in Microsoft Office by Hugues Hoppe [pdf, docx] (research.microsoft.com/~hoppe/)
Official website: www.office.com

Microsoft Project (MSP) W^

Microsoft Visual Studio W^

MIME - Multipurpose Internet Mail Extensions W^

mod_perl W^

Official website: http://perl.apache.org/
See also: Apache, Perl

mod_rewrite W^

See also: Apache, htaccess

MooTools W^

Official website: http://mootools.net/
See also: AJAX, JavaScript

Mozilla Thunderbird W^

Official website: mozilla.com/thunderbird/

Mule W^

  • online archived Core Mule by Jos Dirksen [pdf] (dzone.com)
Official website: mulesoft.org
See also: ServiceMix

Music W^

See also: Guitar

MVVM (Model View ViewModel) W^

  • online archived The MVVM Design Pattern: A Formula for Elegant, Maintainable Mobile Apps by Colin Melia [pdf] (dzone.com)

MySQL W^

  • online saved archived SQL (Structured Query Language) in one page by Alexander Krassotkin [html] (cheat-sheets.org)
  • saved saved archived MySQL Cheat Sheet by Dave Child [html, png, pdf] (cheatography.com)
  • online saved saved MySQL cheatsheets by Bob Stein, VisiBone [two wall posters 43cmx61cm or 61cmx87cm, jpg] (visibone.com)
  • saved archived MySQL Cheat Sheet [html] (nparikh.org)
  • saved MySQL Database Quick Reference by DeepX [pdf] (deepX.com)
  • online saved saved MySQL Cheat Sheet: Complete Cheat Sheet by Nick Schäferhoff (Editor in Chief) [pdf, webp] (websitesetup.org)
  • online saved archived Essential MySQL by W. Jason Gilmore [pdf] (dzone.com)
  • online saved archived Database Partitioning with MySQL: Improving Performance, Availability, and Manageability by Narayana Maruvada [pdf] (dzone.com)
  • online archived Awesome MySQL Cheatsheet by Julien Le Coupanec @LeCoupa [html] (github.com/LeCoupa)
Official website: mysql.com

NanoW^

Official website: nano-editor.org

NetBeans W^

Cheat sheets:
  • online NetBeans Platform 7.0: A Framework for Building Pluggable Enterprise Applications by Heiko Böck, Anton Epple, Miloš Šilhánek, Andreas Stefik, Geertjan Wielenga, and Tom Wheeler [pdf] (dzone.com)
  • online Essential NetBeans Platform by Heiko Böck, Anton Epple, Miloš Šilhánek, Andreas Stefik, Geertjan Wielenga, and Tom Wheeler [pdf] (dzone.com)
  • online NetBeans Java Editor by Geertjan Wielenga and Patrick Keegan [pdf] (dzone.com)
Documentation, Books, Articles:
  • online NetBeans Tutorials and Articles [html] (netbeans.org)
Official website: netbeans.org
See also: Eclipse, Java

Neural NetworkW^

  • online saved archived An informative chart to build Neural Network Cells by Fjodor van Veen [png] (asimovinstitute.org)
  • online saved archived An informative chart to build Neural Network Graphs by Fjodor van Veen [png] (asimovinstitute.org)
  • online saved archived A Mostly Complete Chart of Neural Networks by Fjodor van Veen [png] (asimovinstitute.org)

Node.js W^

Official website: nodejs.org
See also: JavaScript

Notepad++ W^

  • online saved Notepad++ cheat sheet by Andres Gomez [pdf] (docs.google.com)
Official website: notepad-plus-plus.org

Nginx W

Official website: nginx.org

NMAP W^

Cheat sheet:
  • online online saved saved NMAP quick reference by Alejandro Ramos [pdf (eng), pdf (esp)] (SecurityByDefault.com)
Official website: nmap.org

Numbers W^

Objective-C W^

See also: C, C#, C++, Cocoa, Mac, Mac OS X

The Open Graph protocol (og:)

Official website: ogp.me
See also: HTML

OpenCL W^

OpenCV W^

Official website: http://opencv.org/

OpenMP (Open Multi-Processing) W^

Official website: http://openmp.org/
See also: C, C++, Fortran

OpenSearch W^

Official website: http://www.opensearch.org/

OpenSCAD W^

  • online archived OpenSCAD CheatSheet [html] (openscad.org)
Official website: http://www.openscad.org/

OpenSSH - OpenBSD Secure Shell W^

Official website: http://www.openssh.org/

OpenVZ - Open operating system-level virtualization W^

Official website: http://openvz.org/

Oracle W^

Official website: oracle.com
See also: DB2, MySQL, PostgreSQL, SQL, SQLite, Sybase

org-mode W^

Official website: orgmode.org

PARI/GP W^

Cheat sheets:
  • online saved Basic GP: Pari-GP reference card by K. Belabas based on an earlier version by Joseph H. Silverman [pdf] (pari.math.u-bordeaux.fr)
  • online saved Number Fields: Algebraic Number Theory by K. Belabas based on an earlier version by Joseph H. Silverman [pdf] (pari.math.u-bordeaux.fr)
  • online saved Elliptic Curves by K. Belabas based on an earlier version by Joseph H. Silverman [pdf] (pari.math.u-bordeaux.fr)
  • online saved L-functions by K. Belabas based on an earlier version by Joseph H. Silverman [pdf] (pari.math.u-bordeaux.fr)
  • online saved Modular forms and modular symbols by K. Belabas based on an earlier version by Joseph H. Silverman [pdf] (pari.math.u-bordeaux.fr)
Documentation, Books, Articles:
  • online online saved Online User's Guide: This is an html documentation of functions available under the PARI/GP calculator by PARI/GP team [html.tgz] (pari.math.u-bordeaux.fr)
  • online archived GNU Readline Library by PARI/GP team [html] (pari.math.u-bordeaux.fr)
  • online saved Users' Guide to PARI/GP by The PARI Group [pdf] (pari.math.u-bordeaux.fr)
  • online saved Users' Guide to the PARI library by The PARI Group [pdf] (pari.math.u-bordeaux.fr)
  • online saved Developer's Guide to the PARI library by The PARI Group [pdf] (pari.math.u-bordeaux.fr)
  • online saved Installation Guide by The PARI Group [pdf] (pari.math.u-bordeaux.fr)
  • online saved GP Tutorial by The PARI Group [pdf] (pari.math.u-bordeaux.fr)
  • online saved Tutorial for modular forms by Henri Cohen [pdf] (pari.math.u-bordeaux.fr)
  • online saved Introduction to parallel GP by The PARI Group [pdf] (pari.math.u-bordeaux.fr)
Official website: pari.math.u-bordeaux.fr

Perforce W^

Official website: perforce.com

Perl W^

Official website: http://www.perl.org/
See also: Catalyst, mod_perl

Photoshop W^

PHP W^

Official website: http://php.net/

PHP Frameworks W^

See also: PHP

Physics W^

Play Framework W^

Cheat sheets:
  • online archived Play! Framework Cheat Sheet [html] (playframework.org)
Documentation, Books, Articles:
  • online archived Official Documentation: Manual, tutorials & references [html] (playframework.org)

PostgreSQL W^

Official website: http://www.postgresql.org/
See also: DB2, MySQL, Oracle, SQL, SQLite, Sybase

Probability Theory W^

See also: Math

Prolog W

Prototype W^

Official website: http://prototypejs.org/
See also: AJAX, JavaScript

Python W^

Official website: http://www.python.org/
See also: Django

Qt W^, Qt Creator W^

Official website: qt.nokia.com
See also: C++

Quarkus W^

  • online saved archived Quarkus Cheat-Sheet by @alexsotobJ [pdf] (lordofthejars.github.io)
  • online saved archived Getting Started With Quarkus by Alex Soto [pdf] (dzone.com)
Official website: quarkus.io

Quicksilver W^

Official website: blacktree.com

R W^

Official website: r-project.org
See also: Statistics

Rebol W^

  • online archived REBOL Quick Reference Card by REBOL Technologies [html] (rebol.com)
  • online saved Rebol examples by Nick Antonaccio [txt] (re-bol.com)
Official website: www.rebol.com

Red Hat W^

Official website: redhat.com
See also: Fedora, Linux, rpm

Redis W

Official website: redis.io (github.com/redis)
See also:

Regular Expressions W^

REST (Representational State Transfer) W^

  • online archived REST: Foundations of RESTful Architecture by Brian Sletten [pdf] (dzone.com)

RichFaces W^

  • online archived RichFaces 4.0: A Next Generation JSF Framework by Nick Belaevski, Ilya Shailkovsky, Max Katz, and Jay Balunas [pdf] (dzone.com)
  • online archived JBoss RichFaces by Nick Belaevski, Ilya Shaikovsky, Jay Balunas, and Max Katz [pdf] (dzone.com)
Official website: jboss.org/richfaces/

rpm - Red Hat Package Manager W^

  • online archived rpm command cheat sheet for Linux [html] (cyberciti.biz)
  • online archived RPM Cheat Sheet [html] (michal.guerquin.com)
Official website: http://www.rpm.org/
See also: Linux, Fedora, Red Hat

Ruby W^

  • online archived Ruby QuickRef [html] (zenspider.com)
  • saved saved saved Ruby Cheatsheet [pdf, png:page1, png:page2] (cenophobie.com)
  • saved Ruby Language QuickRef by Ryan Davis with Austin Ziegler [pdf] (digilife.be)
  • saved Ruby Library QuickRef by Ryan Davis with Austin Ziegler [pdf] (digilife.be)
  • online archived Essential Ruby by Melchior Brislinger and Peter Cooper [pdf] (dzone.com)
Official website: ruby-lang.org
See also: Ruby on Rails

Ruby on Rails W^

  • online saved saved Ruby on Rails Cheat Sheet by Dave Child [png, pdf] (addedbytes.com)
  • online saved RubyOnRails-Cheatsheet by Blaine Kendall [pdf] (blainekendall.com)
  • online saved Ruby on Rails cheat sheet guide [pdf] (slash7.com)
  • online saved What Goes Where a Ruby on Rails cheat sheet by Amy Hoy [pdf] (slash7.com)
Official website: rubyonrails.org
See also: Ruby

Rust W

Official website: rust-lang.org

SageMath (Sage, SAGE)W^

Cheat sheets:
  • online saved Sage Quick Reference by William Stein (based on work of P. Jipsen) [pdf] (wiki.sagemath.org)
  • online saved Sage Quick Reference: Linear Algebra by Robert A. Beezer (Based on work by Peter Jipsen, William Stein) [pdf] (wiki.sagemath.org)
  • online saved Sage Quick Reference: Elementary Number Theory by William Stein [pdf] (wiki.sagemath.org)
  • online saved Sage Quick Reference: Calculus by William Stein [pdf] (wiki.sagemath.org)
  • online saved Sage Quick Reference (Basic Math) by Peter Jipsen [pdf] (wiki.sagemath.org)
  • online saved Sage Quick Reference: Graph Theory by Steven Rafael Turner [pdf] (wiki.sagemath.org)
  • online saved Sage Quick Reference: Abstract Algebra by B. Balof, T. W. Judson, D. Perkinson, R. Potluri (based on work by P. Jipsen, W. Stein, R. Beezer) [pdf] (wiki.sagemath.org)
  • online saved Sage Dynamics Ref Card v3.0 by B. Hutz, J. Silverman [pdf] (wiki.sagemath.org)
  • online archived Sage Quick Reference Cards in different languages [html -> pdf] (wiki.sagemath.org)
Documentation, Books, Articles:
  • online archived SageMath Help [html] (sagemath.org)
  • online archived SageMath Documentation [html] (doc.sagemath.org)
Official website: sagemath.org

Sandcastle W^

Cheat sheets:
  • online saved Sandcastle and Sandcastle Help File Builder by Michael Sorens [pdf] (red-gate.com)
Documentation, Books, Articles:
  • online saved Taming Sandcastle: A .NET Programmer's Guide to Documenting Your Code by Michael Sorens [pdf] (red-gate.com)
Official websites:
See also: .NET

Scala W^

  • saved Scala Cheat Sheet [pdf] (geekontheloose.com)
Official website: scala-lang.org

Scalability W^ and High Availability W^

See also: Cloud Computing

Science W^

Screen - Screen VT100/ANSI Terminal Emulator W^

Seam W^

Official website: seamframework.org

Sed - Stream EDitor W^

Selenium W^

  • online archived Getting Started with Selenium by Frank Cohen [pdf] (dzone.com)
  • online saved saved archived XPath, CSS, DOM and Selenium: The Rosetta Stone by Michael Sorens [pdf: Locators table, Locators groups] (simple-talk.com)
Official website: seleniumhq.org
See also: CSS, DOM, XPath

Sendmail W^

Official website: http://www.sendmail.org/

ServiceMix (Apache ServiceMix) W^

  • online archived ServiceMix 4.2: The Apache Open Source ESB by Jos Dirksen [pdf] (dzone.com)
Official website: servicemix.apache.org
See also: Apache, Mule

Shell script W^ W^

See also: TLDR Pages

Social media W^

  • online saved archived 2016 Social Media Image Sizes Cheat Sheet by Jamie Spencer [html, jpg] (makeawebsitehub.com)

Solaris W^

Official website: sun.com/solaris/
See also: Unix

Solidity W

Spring Framework W^

  • online archived Spring Web Flow W^ by Craig Walls [pdf] (dzone.com)
  • online archived Spring Annotations by Craig Walls [pdf] (dzone.com)
  • online archived Getting Started with Spring-DM by Craig Walls [pdf] (dzone.com)
  • online archived Expression-Based Authorization with Spring Security 3 by Willie Wheeler [pdf] (dzone.com)
  • online archived Eclipse Tools for Spring: The SpringSource Tool Suite by Gordon Dickens, Chariot Solutions [pdf] (dzone.com)
Official website: springsource.org
See also: Java, Spring Roo

Spring Roo W^

  • online archived Spring Roo: Open-Source Rapid Application Development for Java by Stefan Schmidt [pdf] (dzone.com)
Official website: www.springsource.org/roo
See also: Java, Spring Framework

SQL - Structured Query Language W^

SQL Server W^

SQLite W^

  • online saved archived Syntax Diagrams For SQLite [html] (sqlite.org)
Documentation, Books, Articles:
  • online archived Categorical Index Of SQLite Documents [html] (sqlite.org)
  • online archived SQLite In 5 Minutes Or Less [html] (sqlite.org)
Official website: http://www.sqlite.org/

SSI - Server Side Includes (mod_include) W^

See also: Apache

Statistics and Data Analysis W^

See also: Math, R

SVG - Scalable Vector Graphics W^

Official website: w3.org/Graphics/SVG/

SVN (Apache Subversion) - version control system W^

See also: Bazaar, CVS, Git

Swift W

Official website: www.swift.org

Sybase W^

Symfony W^

See also: PHP

Tapestry W^

Official website: tapestry.apache.org
See also: Apache, Design Pattern, Java

Tcl/Tk - Tool Command Language W^

Official website: http://www.tcl.tk/

TCP - Transmission Control Protocol W^

TeX W^

Official website: http://www.tug.org/
See also: LaTeX, MathML

TLDs - Top-level domains W^

TLS - Transport Layer Security; SSL - Secure Sockets Layer W^

Trigonometry, Trig W^

See also: Math

TTCN-3 (Testing and Test Control Notation version 3) W^

Cheat sheets:
  • online saved Quick Reference Card for TTCN-3 by Axel Rennoch, Claude Desroches, Theo Vassiliou and Ina Schieferdecker [pdf] (blukaktus.com)
Documentation, Books, Articles:
  • online TTCN-3 Standard Suite by ETSI [pdf] (ttcn-3.org)
Official website: ttcn-3.org

Twitter W^

Official website: twitter.com

TypeScript W

Official website: typescriptlang.org
See also: JavaScript.

Ubuntu W^

Official website: ubuntu.com
See also: Linux, Unix

UML - Unified Modeling Language W^

Unicode W^

Official website: http://www.unicode.org/
See also: Characters

Unix W^

Unreal Engine W^

  • online saved UnrealScript (UScript) Cheat Sheet [png] (udn.epicgames.com)
Official website: unrealengine.com

Vaadin W^

Cheat sheets:
  • online Vaadin: A Familiar Way to Build Web Apps with Java by Marko Grönroos [pdf zip] (dzone.com)
  • online Getting Started with Vaadin by Marko Grönroos [pdf zip] (dzone.com)
  • online Mastering Portal UI Development With Vaadin and Liferay by Sami Ekblad, James Falkner [pdf] (dzone.com)
Documentation, Books, Articles, Video:
  • online saved Book of Vaadin: Vaadin 6.4 by Marko Grönroos [pdf] (vaadin.com)
  • online Official step by step video tutorial (youtube.com)
Official website: vaadin.com

VBScript - Visual Basic Scripting Edition W^

Verilog W, SystemVerilog W

See also: VHDL

VxCFS, VCS - Veritas Cluster File System W^

VHDL W

Official website: opensource.ieee.org/vasg
See also: Verilog

Vim - Vi IMproved W^, Vi W^

Official website: http://www.vim.org/
See also: Vi, LaTeX-Suite

Virtualization W^

See also: VMware

Visual Basic W^ W^

See also: .NET, ASP, C#, Visual Basic

VMware (VI) W^

Official website: vmware.com
See also: Virtualization

VoiceXML - Voice Markup Language W^

Cheat sheet:
  • online saved VoiceXML: elements - attributes [pdf] (zvon.org)
Official website: http://www.w3.org/Voice/
See also: XHTML, XML, XML Schema, XPath XSL, XSLT

vvvv W^

Cheat sheets:
  • online saved don't panic - the nodes guide to vvvv [pdf] (vvvv.org)
Documentation, Books, Articles:
  • online Documentation [html] (vvvv.org)
  • online saved Linear Spread: illustrated guide to vvvv for newbies in computer arts [pdf eng] (vvvv.org)
  • online saved Linear Spread: иллюстрированное руководство по vvvv для новичков в интерактивных искусствах [pdf rus] (vvvv.org)
Official website: http://vvvv.org/

WebGL (Web-based Graphics Library) W^

Cheat sheets:
  • online saved Official WebGL 1.0 API Quick Reference Card by Khronos Group & Miller & Mattson [pdf] (khronos.org/webgl/ & millermattson.com)
  • online saved saved WebGL Cheat Sheet v0.2 by Jacob Seidelin [htm, pdf] (nihilogic.dk)
Documentation, Books, Articles:
  • online WebGL Specification Version 1.0 by Khronos Group [html] (khronos.org)
  • online WebGL Public Wiki by Khronos Group [html] (khronos.org)
  • online WebGL articles by Mozilla [html] (mozilla.org)
  • online The series of lessons as a way of teaching myself WebGL by Giles [html] (learningwebgl.com)

WebMatrix W^

Cheat sheet:
  • online WebMatrix: Advanced Web Development Made Simple by James Sugrue [pdf] (dzone.com)
Documentation, Books, Articles:
  • online Learn WebMatrix [html] (microsoft.com)
See also: ASP

Wicket (Apache Wicket) W^

  • online Getting Started with Apache Wicket by Andrew Lombardi [pdf] (dzone.com)
Official website: wicket.apache.org
See also: Apache

Wikipedia W^

Official website: http://www.wikipedia.org/

Windows W^

Windows Communication Foundation (WCF) W^

Cheat sheet:
  • online Getting Started with Windows Communication Foundation 4.0 by Scott Seely [pdf] (dzone.com)
See also: Windows, .NET

Windows Presentation Foundation (WPF) W^

  • online saved WPF Binding CheatSheet version 1.1 by NBD Tech [pdf] (nbdtech.com)
  • online saved XAML for WPF Cheat Sheet by Blueboxes.co.uk [pdf] (blueboxes.co.uk)
  • online Getting Started with Windows Presentation Foundation by Christopher Bennage and Rob Eisenberg [pdf] (dzone.com)
  • online WPF Controls - A Visual Quick Start by Josh Fischer [html] (codeproject.com)
  • online WPF Wonders: An Alphabetical Compendium of WPF Controls by Rod Stephens [html] (devx.com)
See also: Windows, .NET

Windows PowerShell W^

Cheat sheet:
  • online saved Windows PowerShell 2 | Cheat Sheet by Markus Widl [pdf] (de - galileocomputing.de)
  • online WindowsPowerShell by Bruce Payette [pdf] (dzone.com)
Official website: microsoft.com/powershell
See also: Windows

WordPress W^

Official website: http://wordpress.org/

Xcode W^

  • online saved archived Xcode Cheat Sheet by Tobias Günther [pdf] (git-tower.com)
Official website: developer.apple.com/xcode/
See also: C, C++, Objective-C, OS X

XHTML - eXtensible HyperText Markup Language W^

Official website: http://www.w3.org/MarkUp/

XML - eXtensible Markup Language W^

Official website: http://www.w3.org/XML/

XML Schema W^

See also: MathML, XHTML, XML, XPath, XSL, XSLT

XPath W^

  • online saved XSLT 1.0 and XPath 1.0 Quick Reference [pdf] (mulberrytech.com)
  • saved XPath by DeepX Ltd [pdf] (refcards.com)
  • online saved saved XPath, CSS, DOM and Selenium: The Rosetta Stone by Michael Sorens [pdf: Locators table, Locators groups] (simple-talk.com)

XSL - Extensible Stylesheet Language W^

See also: MathML, XHTML, XML, XML Schema, XPath, XSLT

XSLT - Extensible Stylesheet Language Transformations W^

See also: MathML, XHTML, XML, XML Schema, XPath, XSL

XSS - Cross Site Scripting W^

Zen Coding W^