Bluefish - GTK based HTML editor
- A powerful tool for editing dynamic and interactive websites. It supports many programming and markup languages, and isprimarily for experienced web designers and programmers. Latest stable release is 2.0, 2010-10-12.
Collabtive
- A Web-based project management application that can handle unlimited number of projects, tasks, lists, and milestones. It's intended for small to medium-sized businesses and freelancers. This software can also be installed on an internal server as well as in the cloud. Latest release is 0.6.1, 2009-10-12.
Dev Shed - Open Source Web Development Tutorials
- Web development tutorial site. Includes tutorials, articles, and forums on many topics including: Administration, AJAX, Apache, DHTML, Java, MySQL, Perl, Python, Security, XML, and Zope.
Django | The Web framework for Perfectionists With Deadlines
- A high-level Python Web framework that encourages rapid development and clean, pragmatic design. It has full support for internationalization of text in code and templates. Latest release is 1.2, 2010-05-17.
Firebug - Web Development Evolved
- A Firefox extension which includes several Web development tools that can edit, debug, and monitor CSS, HTML, and JavaScript live in any Web page.
Grok - A Smashing Web Framework
- Grok is a web application framework for Phython developers. It is bsed on Zope 3 technology and is suitable for both beginners and experienced web developers. Latest stable release is 1.1, 2010-05-18.
ISPConfig - OpenSource ISP management and Hosting Control Panel.
- A hosting control panel for Linux that manages such things as Web and email servers, BIND DNS, FTP servers, MySQL client-databases, and Webalizer statistics; comes with an easy-to-use Web interface that is available in many languages.
ImgSeek
- A photo collection manager and viewer with content-based search and many other features. Latest release is 0.8.6, 2006-01-24.
KompoZer
- A complete web authoring system that combines web file management and easy-to-use WYSIWYG web page editing. Available in many languages. A Nvu/Composer fork.
LifeType | Open Source Blogging Platform
- A GPLed blogging platform designed for use with a MySQL database and PHP. It supports multiple blogs and users in a single installation. Several translations are available.
LinPHA -- The PHP Photo Archive
- A multilingual, flexible photo archive written in PHP. Latest stable release is 1.34, 2008-04-29.
Linuxconf Home
- A sophisticated framework to write admin modules; many modules available for LinuxConf, including Apache, gruconf, inittab, kernelconf, liloconf, xterminals; a systems administration tool.
MapServer Homepage
- A development environment for building spatially-enabled internet applications; excels at rendering spatial data (maps, images, and vector data) for the Web.
Mason HQ
- Perl-based web site development and delivery engine. Latest version is 1.39, 2008-01-30.
MediaWiki
- Web wiki software developed by the Wikimedia Foundation; user-friendly software for contributing and editing content on a wiki.
MinDia-Home
- Software for slide show presentations.
MoinMoin Wiki
- A Python-based wiki engine. Latest release is 1.8.5, 2009-09-11.
Movable Type
- An open source blogging software platform.
Mozilla Sunbird
- A cross-platform calendar application, built upon Mozilla Toolkit. Available in many languages.
ONLamp.com Article - " Which Open Source Wiki Works For You?"
- A review article of the popular wiki software packages currently available. (Originally published in 2004 with a 2006 update. N.B.: the information in this article is still useful today - 2009.)
OpenLaszlo
- An open source platform for the development and delivery of rich Internet applications (web applications that have features and functionality of traditional desktop applications). This platform consists of the LZX programming language and the OpenLaszlo Server.
OutSide Photos
- A PHP-based image upload and management system, with thumbnail generation, slideshow mode and support for multiple users.
Penguin Greetings
- An engine for handling web ecards plus a collection of 200+ cards that can be quickly and easily installed.
Pixelpost
- A photoblogging application which comes with additional functionality via addons, so you can turn this software into a photo publishing platform.
PmWiki
- A wiki-based system for collaborative creation and maintenance of websites. Available in many languages.
Quanta Plus Web Development Environment
- A web development tool for the KDE Desktop; designed for quick web development. Latest stable release is 3.5.9, 2008-02-20.
Ruby on Rails
- An open source web application framework (written in Ruby) that closely follows the Model View Controller (MVC) architecture. Latest release is 2.3.4, 2009-09-04.
SCREEM
- An HTML/XML editing system for web site development. Latest stable release is 0.16.1, 2005-11-16.
The Quixote Web Framework
- A framework for writing web-based applications using Python. Site contains extensive documentation including a white paper and tutorials. Latest release is 2.6, 2008-12-13.
The Zope Book
- The best documentation available for Zope. Links to the 2.5 and 2.6 editions can be found here. Available online and in PDF format.
The eyeOS Cloud Computing Web Desktop
- An open source, Web desktop environment and operating system. The user can access their own customized desktop from anywhere using a web browser. This software can be used by individuals, developers, educators, and public administration personnel. Internationalization is excellent - 20+ languages are available. Latest stable release is 1.8.7.1, 2009-10-06.
The flPhoto Homepage
- A basic image management and display program based on the FLTK toolkit.
The kalbum Homepage
- A KDE3 tool for creating albums from a collection of images with an easy-to-use thumbnail interface.
WebDAV Resources
- A resource site for the WebDav (Web-based Distributed Authoring and Versioning) community; site has documentation, specifications, software, mailing lists, and news.
Wikidot Open Source
- Wiki software for creating and hosting wiki farms on servers.
WordPress
- An open source web publishing platform with a focus on aesthetics, web standards, and usability. It works well with blogging software. Latest stable release is 3.04, 2010-12-29.
ZOPE
- An open source application server for building content management systems, intranets, portals, and custom applications.
ZopeWiki
- This site houses most Zope-related wikis since 2006.
b2evolution Blogging Software
- A multilingual, multi-user, and multi-blog publishing system written in PHP and backed by a MySQL database.