The Free / Libre / Open Source Web App with the most built-in features
Free flexible open source todo manager featuring hierarchical tasks
Free data backup software to synchronize files and folders
Streams many media formats with minimal configuration
Manage your organization online
Free church worship presentation software
Gramps, the open source genealogy program
Standalone chat system developed in php, mysql and javascript
Collabtive is web based project management software. Simple and easy.
Localization tools built by localizers for localizers
A free sing-along karaoke game for your PC
A software-based online payment system
Open Source Enterprise Wiki and Web Application Platform
ReportServer is a modern and versatile business intelligence platform
Burns CD / DVD media.
Free music notation & composition software
FCKeditor (retired)
Simple, web-based address & phone book
JavaScript-Based Molecular Viewer From Jmol
A WebBased Collaboration OpenSource Tool