DokuWiki – open source wiki software that does not require a database
Events Manager – registration management system for WordPress
FeedWordPress – an Atom/RSS aggregator forWordPress
KeePassX – cross platform password manager
MarketPress – ecommerce package for WordPress
OwnCloud – open source web application for data synchronization, file sharing, and cloud storage
RoundCube – open source webmail software
Semantic MediaWiki – free open source extension to MediaWiki
TinyTinyRSS – an open source web-based news feed (RSS/Atom) reader and aggregator designed to allow you to read news from any location while feeling as close to a real desktop application as possible
UNetbootin – creates bootable Live USB drives to Ubunto, Fedora, and other Linux distributions without burning a CD
Wagn – free open means of creating team-driven websites
Zotero – free tool to collect, organize, cite, and share research sources
