VersionPress : VersionPress is a free and open source version control plugin for WordPress built on Git. You can:
Undo changes
Create staging sites
Merge databases ...
WikkaWiki : WikkaWiki is a flexible, standards-compliant and lightweight wiki engine written in PHP, which uses MySQL to store pages.
TWiki : TWiki® is a flexible, powerful, and easy to use enterprise wiki, enterprise collaboration platform, and web application platform. It is a Structured W...
