CodeMirror is a JavaScript library that can be used to create a relatively pleasant editor interface for code editing.

It supports many popular languages including HTML, CSS, XML, PHP, Python, Ruby, Java.

PHPScenario is a free object-oriented split testing library for PHP. At its very simplest, the library provides one-line A/B testing, and is fairly extensible.

Features

• One line testing through smart defaults.
• Support for PDO and Zend Framework DBALs.
• XML-based result renderer (HTML via included XSL stylesheet).

AJAX Chat is a fully customizable open source web chat software implemented in JavaScript, PHP and MySQL.

AJAX Chat supports voice chat that is powered by Flash & Ruby (sound support is optional).

Features

• Multi-lingual chat software
• Realtime monitoring and logs viewer
• Custom emoticons support
• Multiple channels & private messaging

Ajax Chat is developed with security in mind and it is strong against code injections, SQL injections, cross-site scripting (XSS), session stealing and other attacks.

eXtplorer is a web based PHP Javascript File Manager that allows to browse directories, upload and download files, change file permissions (chmod) and much more.

Features

• Dynamic Directory Tree with on-demand loading of subdirectories
• Edit Files (with Syntax-Highlighting
• User Management with different permission levels
• Available as a component for Joomla! and Mambo

The eXtplorer PHP file manager can be used to login to the FTP server (like net2ftp) and work as if you were using an FTP client.

SimplePie is a code library intended to make it ridiculously easy for people to manage RSS and Atom Feeds.

Its an easy to use API that handles all of the dirty work when it comes to fetching, caching, parsing, normalizing data structures between RSS and Atom formats, handling character encoding translation, and sanitizing the resulting data.

Flexible enough to suit beginners and veterans alike, SimplePie is focused on speed, ease of use, compatibility and standards compliance.

Fluency Admin, a free admin theme for Worpdress that gives the WordPress admin interface a boost, with a new style and some cool features.

Admin Theme Features

• Compatibility with WordPress 3.0
• Add your own custom link to your custom logo on the WP login page
• Display your own custom logo at the top of the WP Menu once logged in
• Multilingual admin theme (Spanish, Turkish, Italian, Chinese)

Fluency Admin has been tested in the latest versions of Safari, Firefox, Opera and Internet Explorer (You may experience issues with IE).

68KB is an open source PHP MySQL driven knowledge base script that is easy to configure and setup. This professional PHP knowledge base script helps you to create your own help system or documentation.

Features

• Unlimited categories and an unlimited category depth
• Completely multi-lingual
• Template system
• Extend the script by using extensions
• Built-on CodeIgniter php framework

SiteFusion is a server-based development environment. Applications are written in pure object-oriented PHP and work through a thin XUL client.

SiteFusion applications look and behave like native system applications but run on a server generating JavaScript commands.

Features

• Platform-independent applications
• API that offers the full set of possibilities that XUL and PHP entail
• Client connecting through a regular web-server
• Two-way real-time ZLib compressed communication
• No exposure of application logic and code

Projectfork is an open source project management component for Joomla CMS. It is theme-able and can be extended by using extensions (free & paid). It has a built-in calendar control to help you define deadlines for tasks, milestones and projects.

Projectfork is a feature rich project management component, look at few of them:

• Adaptive layout
• Customizable panels for project info
• Create and archive infinite projects
• Milestones for groups of tasks
• Time tracker & file manager
• Access level control (ACL)

Quality Controls is a Free WordPress theme that was designed to be used as a bug tracking application. You can create and track your bugs. It is simple, and packaged lightly, allowing the user to use it however he/she wants.

The idea is to provide a base “framework” of sorts, that creates the core functionality needed for bug tracking, but leaves room for the user to take it in any direction they want.