Choose language, paste code and input data (optionally), choose whether your code ought to be executed and whether it ought to be private (i.e. not listed in recent pastes) and click submit button. Then watch your code being executed, share it with your team or friends, or run it again with new input to debug.

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collaborative code editor - HTML, CSS, Javascipt, PHP , and plain text

ActiveState Code is a site for learning from and sharing code recipes - with a focus on dynamic languages and languages used for web development. The recipes you'll find here highlight programming best practices and can be used directly in day-to-day tasks, as a source of ideas, or as a way to learn more about languages or libraries. We invite you to contribute code, comments, and ratings for recipes. The recipes are freely available for review and use.

JTidy is a Java port of HTML Tidy, a HTML syntax checker and pretty printer. Like its non-Java cousin, JTidy can be used as a tool for cleaning up malformed and faulty HTML. In addition, JTidy provides a DOM interface to the document that is being processed, which effectively makes you able to use JTidy as a DOM parser for real-world HTML.

The TIOBE Programming Community index gives an indication of the popularity of programming languages. The index is updated once a month. The ratings are based on the number of skilled engineers world-wide, courses and third party vendors. The popular search engines Google, MSN, Yahoo!, Wikipedia and YouTube are used to calculate the ratings. Observe that the TIOBE index is not about the best programming language or the language in which most lines of code have been written. The index can be used to check whether your programming skills are still up to date or to make a strategic decision about what programming language should be adopted when starting to build a new software system.

Build-time error reporting, refactoring and code completion in Visual Studio Extended JavaScript syntax power with C# language features Pure client-side control library coded in C#

gotAPI helps you find functions, classes, methods, properties, styles, tags, constants and more \n Search In\nActionScript 2.0, ActionScript 3.0, Adobe Flex 2, Adobe Flex 3.3, Apache Ant, Apache Commons, Apache RegExp, Apache Struts 1.1, Berkley DB XML, Bluetooth and OBEX, C++, CakePHP 1.2, Castor, CDC, CLDC, ColdFusion MX-7, ColdFusion MX-8, CSS, CSS, DbUnit 2.4.5, Dinkumware C/C++, DITA 1.1, DocBook, Dojo Toolkit 1.3, Drupal, Eclipse Platform 2.1, Erlang, Flickr API, FP, Google GWT, Google GWT+Gears, Groovy, Haskell, Hibernate, HTML, HTML, HttpUnit, J2EE 5.0, Java 1.5, Java 1.6, JavaScript, JavaScript, jQuery, JSON LIB, JSTL, JUnit, Log4J, MIDP, Mobile Media, MochiKit, MooTools, MySQL 4.1, OpenGL 2.1, Oracle 10g, Oracle 9i, Orb API 2.0, OSGi Platform 4.1, PBP, Perl 5.10, PHP, PostgreSQL 8.3, Prototype.js, Python 2.6.1, RMagick 1.15, RogueWave, Ruby Std Libraries, Ruby/Rails, Scala 2.7.3, Schema (XSD), Script.aculo.us 1.8, Selenium 0.8.2, Sicstus Prolog, Simple DirectMedia Layer, Spring Framework 2.0, Symphony 1.2, Twitter API, Web Services, XML DOM, XPath 2.0, XSL 2.0, Yahoo! UI\n

Yahoo! Blueprint is a technology for creating mobile web sites for many different types of mobile phones. Use the technology that powers our products in your own sites-all you need is a web server and some simple XML.

The DZone Tech Library brings DZone members a wealth of resources from across our network that includes Refcardz, whitepapers, webcasts, podcasts, trial downloads, and more.

Snippets is a public source code repository. Easily build up your personal collection of code snippets, categorize them with tags / keywords, and share them with the world

UI 3 is Yahoo!'s next-generation JavaScript and CSS library; it powers the new Yahoo! homepage and incorporates what we've learned in five years of dedicated library development. Today, the YUI 3 Core and a full utility set are ready for use. All YUI projects are BSD-licensed and are available for forking and contribution on GitHub.

Conceptual and task-oriented information. Guides include overviews, tutorials, programming guides, server administration guides, and, for developer tools, user guides.

Box2DJS is a JavaScript port of Box2D Physics Engine.

BrowserPlus™ is a technology for web browsers that allows developers to create rich web applications with desktop capabilities.

Sinatra is a DSL for quickly creating web applications in Ruby with minimal effort:

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