DokuWiki - DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
Startup Toolkit - Interactive how-to guides to launch your startup
MediaWiki - MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia.
Manager checklist - Cheatsheet of things every manager should do
Confluence - Confluence is content collaboration software that changes how modern teams work
Where To Post Your Product - A curated collection of 280+ websites to share your startup