MediaWiki - MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia.
ClearVoice - ClearVoice is a content marketing platform and service solution.
TiddlyWiki - a non-linear personal web notebook
Percolate - Content Marketing Redefined. Percolate is the first end-to-end technology for content marketing.
Confluence - Confluence is content collaboration software that changes how modern teams work
Styla.com - Content commerce solution for online retailers and brands