AMuseWiki - Amusewiki is more than just a wiki engine, it’s also a powerful authoring, archiving and publishing platform.
Wiki.js - An open source, modern and powerful wiki app built on Node.js, Git, and Markdown.
Bloomfire - Let Bloomfire help you get organized! Organize your content, build your company knowledge base and help your employees to be more successful.
Oddmuse - Oddmuse is a wiki engine.
Confluence - Confluence is content collaboration software that changes how modern teams work
MoinMoin - MoinMoin is an advanced, easy to use and extensible WikiEngine with a large community of users.