MediaWiki alternatives

MediaWiki is the leading wiki software worldwide. It is free, and open source. MediaWiki is used by the WikiMedia Foundation in all of it's projects for shared knowledge such as Wikipedia, Wikibooks, Wictionary etc.

The software + extensions + other related services and technologies can be composed into multi-purpose and powerful systems for individual, group and enterprise use. Of course any such solution will run up against a number of 'competitors'. This page will try to define some of the leading use cases for MediaWiki as well as comparing the solutions with alternatives in the proprietary software market.

The MediaWiki v Confluence article compares one of the biggest competitors in the enterprise market.

There are also newcomers like https://clickup.com that fall more into a comprehensive 'project management and collaboration' suite than general-purpose knowledge wiki.