
MediaWikiSoftware
MediaWiki is a wiki engine (a program for creating a collaboratively edited website). It is designed to handle heavy websites containing library-like document collections, and supports user uploads of images/sounds, multilingual content, TOC autogeneration, ISBN links, etc. Moreover, it keeps track of changes, so users can receive notifications, view diffs and revert edits. This system has many other features and can easily be extended.

Nova-IdeoPlatform, Software
Nova-Ideo is a participatory innovation tool, the merger of the box ideas and collaborative portal.

GitHubPlatform, Software
GitHub is a web-based Git repository hosting service, which offers all of the distributed revision control and source code management functionality of Git as well as adding its own features. Unlike Git, which is strictly a command-line tool, GitHub provides a web-based graphical interface and desktop as well as mobile integration. It also provides access control and several collaboration features such as wikis, task management, and bug tracking and feature requests for every project.

TWikiSoftware
<p>TWiki is a flexible, powerful, and easy to use enterprise wiki, enterprise collaboration platform, and web application platform. It is a Structured Wiki, typically used to run a project development space, a document management system, a knowledge base, or any other groupware tool, on an intranet, extranet or the Internet. Users without programming skills can create web applications. Developers can extend the functionality of TWiki with Plugins. TWiki fosters information flow within an organization, lets distributed teams work together seamlessly and productively, and eliminates the one-webmaster syndrome of outdated intranet content. TWiki has been downloaded over 500,000 times and is used daily by millions of people in over 100 countries. Some larger deployments have several 100,000 pages and over 10,000 users. TWiki is developed by an active open source community on twiki.org.</p
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OnlyOfficePlatform
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DébapédiaPlatform
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PmWikiSoftware
<p>PmWiki is a wiki-based system for collaborative creation and maintenance of websites.</p> <p>Their website was last updated in 2006.</p
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TeemPlatform, Software
Teem is a web tool and mobile app for collaboration in communities, which facilitates onboarding of newcomers