MediaWiki - MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia.
Oak Engage - Oak Engage is a digital workplace for enterprises that need to communicate with their workforce. Connect your teams. Engage your people.
TiddlyWiki - a non-linear personal web notebook
Zendo - Zendo allows you to sell productized, subscription and custom services. Collaborate and collect payments. Create quotes and invoices. Eliminate multiple tools and enjoy the simplicity.
Confluence - Confluence is content collaboration software that changes how modern teams work
Shelf.io - Shelf is a transformational content sharing platform that helps teams and companies organize...