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Comprehensive directory of all developer cheat sheets, quick references, interactive tools, and web standards.

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Interactive Developer Tools & Compilers13 Tools

Realtime Colors Studio

Live color palette generator, WCAG contrast audits, and instant template previewer

JSON Formatter

Format, validate, repair, convert (YAML/XML/CSV/TypeScript) and compare JSON

HTML, CSS & JS Playground

All-in-one web editor with live rendering and console output

Markdown Editor & Cheat Sheet

Live preview, interactive table builder, and syntax cheat sheet

Regex Tester

JavaScript regular expression tester with highlighting and explanations

REST API Client

In-browser HTTP request client with header inspection and JSON parsing

HTML Editor

Live rendered HTML sandbox with instant preview

CSS Editor

Live CSS playground with flexbox and grid layout presets

JavaScript Compiler

Run JavaScript code and read visual console logs

HTML & CSS Abbreviations

Emmet syntax generator for rapid HTML authoring

Git Branching

Animated interactive levels for learning Git branching and rebasing

Browser Support

Baseline status & compatibility data for 1,200+ web features

Compare Browsers

Side-by-side comparison of Chrome, Safari, and Firefox support

Quick Reference Guides24 Guides

Bash Scripting C C#C++CSS Dart Docker Git Go HTML Java JavaScript Kotlin Linux Commands npm & Node PHP Python Regex Ruby Rust SQL Swift TypeScript VS Code Shortcuts

Language & Framework Cheat Sheets299 Sheets

.NET ActionScript 3 Ada Ado.Net Adobe Acrobat Adobe System Advanced Packaging Tool AJAX Algebra Apache Apache Ant Apache Camel Apache Cassandra Apache Solr apiOmat Arduino ASCII ASP Assembly Language Astronomy Atom AWK Azure Bazaar Berkeley DB BGP BIRT BlazeDS Blender Blogger BluePrint Bowler BPEL (Web Services Business Process Execution Language)BPM (Business Process Modeling)C C#C++Calculus and Analysis Camera Catalyst Characters Chef Chemistry Chmod Clojure Cloud Computing CMake Cocoa ColdFusion Colour Computer Science Continuous Integration Countries CSS CSS Grid Cue CVS Db2 DB4O Debian Delphi Design Pattern Developer Tools Django Docker Doctrine Doctypes Domain Driven Design Dot Language Drupal Drush DTD (Document Type Declaration)Eclipse Ed EIGRP EJB Emacs Erlang Express F#Facebook Fedora File Firebug Firefox Firefox Add-Ons First Hop Redundancy FitNesse Flash Flash Catalyst Flex Flexbox Fonts Fortran Freeware FTP GDB (GNU Debugger)Geometry Gift Gimp Git GlassFish Gmail Google Google App Engine Google Chrome Google Maps Grails Griffon Groovy Guitar GWT (Google Web Toolkit)Hadoop Hardware Haskell HBase Hibernate Htaccess HTML HTML DOM HTTP Icons IEEE 802.11 IEEE 802.1X Illustrator IntelliJ IDEA Internet Explorer IPsec IPv4 Multicast IPv6 IRC (Internet Relay Chat)IS-IS IVR Java Java EE Java Persistence API JavaFX JavaScript JavaServer Faces JBoss JDBC Jetty jQuery JSP JUnit Languages LaTeX LaTeX-Suite less Linux Lisp Logic Lotus Domino Lua Lucene Mac Mac OS X Machine Learning Maple Math Mathematica MathML Mathomatic MATLAB Maven Maxima MediaWiki MFC Microformats Microsoft Excel Microsoft Project Microsoft Visual Studio MIME mod_perl mod_rewrite MongoDB Shell MooTools Mule Music MVVM MySQL NetBeans NMAP Node.js Numbers Objective-C OCaml Open Source Media Framework OpenCL OpenCV OpenMP OpenSearch OpenSSH OpenVZ Oracle Org Mode OSPF Perforce Perl Photoshop PHP PHP Frameworks PhpStorm Physics Play Framework Ports PostgreSQL PPP Probability Theory Processing Prototype Python Qt Quicksilver R RedHat RegExp Religion REST RickFaces RIP rpm Ruby Ruby on Rails Rust Sandcastle Scala Scalability Scapy Science Screen Seam Sed Selenium Sendmail ServiceMix ShellScript Silverlight Smile Social Bookmarks Solaris Spanning Tree Spring Framework Spring Roo SQL SQL Server SQLite SSI Statistics SVG SVN Sybase Symfony Symfony2 Tapestry Tcl/Tk TCP Tcpdump TeX Thunderbird TLDs TLS Trigonometry TTCN-3 Twitter Ubuntu UML Underscore.js Unicode Unix Vaadin VBScript Veritas Cluster Vi Vim Virtualization Visual Basic VMware VoiceXML vvvv WebGL WebMatrix Wicket Wikipedia Windows Windows Communication Foundation Windows Powershell Windows Presentation Foundation Wireshark Display Filters WordPress World of Warcraft XHTML XML XML Schema XPath XSL XSLT (Extensible Stylesheet Language Transformations)XSS (Cross Site Scripting)Yahoo

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