This list is divided into proprietary or free software, and open source software, with several comparison tables of different product and vendor characteristics. It also includes a section of project collaboration software, which is a standard feature in collaboration platforms.
General
Systems listed on a light purple background are no longer in active development.
MediaWiki, which provides core content management and integrates with many other tools via extensions
Nextcloud, file hosting service, functionally similar to Dropbox, Office 365 or Google Drive when used with its integrated office suite solutions Collabora Online or OnlyOffice
OnlyOffice Community Server, available for Microsoft and Linux
Projectplace, full suite of collaborative project tools
Redmine, for software projects includes issue tracking, wiki, basic file and document management with hooks to major version control systems: SVN, Git, etc.
TeamLab, has forums, blogs, bookmarks, wiki, task management, instant messaging, mobile version, CRM, online document editors
TogetherJS by Mozilla, an open-source javascript library that can transform any web application into a real-time collaborative editor.
Trac, has wiki, document management, ticket system and version control system
Traction TeamPage integrated action tracking, wiki, live status, notification, and streams organized by person, task, project, and shared permissioned space.
web2project, a dotproject fork with active current development and some innovations: subprojects, etc.
WiserEarth, social network and database that include an open-source Groupware (closed)
Wrike, interactive web-based project management software and tools for remote collaboration
Zoho Projects, a web-based project management software with collaboration features[30] such as Interactive Feeds, Chat, Calendar, Forum, Wiki Pages and shared Document management
Enterprise bookmarking engine, uses peer and social networking principles to tag and link distributed data resources for universal search regardless of vendor, format, or location
Runs on almost all Unix/Linux; integrated Roundcube webfrontend, and ActiveSync (via Syncroton), and serves most common PIM-clients such as Kontact, Microsoft Outlook (with connector plug-in) and others.
Free, for Windows, Mac OS X, Linux; built-in web server allows P2P synchronizing similar to Microsoft Groove and usual guest workspace access via Ajax-based WebUI
^Bly, Robert (December 2010). Make Every Second Count : Time Management Tips and Techniques for More Success with Less Stress. Career Press, Incorporated. ISBN9781601631336.
^"Using Discussions". Smartsheet. December 3, 2012. Retrieved September 11, 2015.