- Free • Open Source
MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia. It is now used by several other projects of the non-profit Wikimedia Foundation and by many other wikis, including this website, the home of MediaWiki.
- Paid • Proprietary
Cloud-based platform for implementing knowledge management and collaboration workflows to facilitate knowledge sharing between your company employees and your customers. Build internal or external Knowledge Base, news portal or cross-team communication channels using Acknow.