JoinDiaspora - JoinDiaspora is a privacy-aware, distributed, open source social network which are open to anyone.
MediaWiki - MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia.
Apache JSPWiki - Apache JSPWiki is an open source Wiki engine, feature-rich and built around standard JEE components.
TiddlyWiki - a non-linear personal web notebook
SquadHelp - SquadHelp is a website that helps users to get the fastest way to name their App, company, business, startup, product, or brand.
Confluence - Confluence is content collaboration software that changes how modern teams work