* [Camlistore](https://camlistore.org/) - Camlistore is a set of open source formats, protocols, and software for modeling, storing, searching, sharing and synchronizing data in the post-PC era. Data may be files or objects, tweets or 5TB videos, and you can access it via a phone, browser or FUSE filesystem. ([Source code](https://github.com/camlistore/camlistore)) `Apache``Go`
* [Coquelicot](https://coquelicot.potager.org/) - Coquelicot is a “one-click” file sharing web application with a focus on protecting users’ privacy. - `AGPLv3`
@ -307,7 +311,7 @@ CMS are a practical way to setup a website with many features. CMS often come wi
* [egroupware](http://www.egroupware.org/) - Software suite including calendars, address books, notepad, project management tools, client relationship managemnt tools (CRM), knowledge management tools, a wiki and a CMS.
* [Horde](http://www.horde.org/) - The Horde Project is about creating high quality Open Source applications and libraries, based on PHP and the Horde Framework. - `GPL` + Various Free Software / Open Source Software Licenses
* [Kolab](https://kolab.org/) - Kolab community is a unified communication and collaboration system - `Various FLOSS Licenses` ([Source](http://git.kolab.org/))
* [ownCloud](https://owncloud.org/) - All-in-one solution for saving and sharing files, photos, music- `AGPLv3``PHP`
* [ownCloud](https://owncloud.org/) - All-in-one solution for saving, synchronizing, viewing, editing and sharing files, calendars, address books and more - `AGPLv3``PHP`
* [Sogo](http://www.sogo.nu/) - SOGo offers multiple ways to access the calendaring and messaging data. CalDAV, CardDAV, GroupDAV, as well as ActiveSync, including native Outlook compatibility and web interface. ([Demo](http://www.sogo.nu/tour/online_demo.html), [Source Code](http://www.sogo.nu/development/source_code.html)) `GPLv1/LGPLv2``Objective-C`
* [Zimbra Collaboration](https://www.zimbra.com/downloads/) - Email, calendar, collaboration server with web interface and lots of integrations. ([Source code]( https://www.zimbra.com/open-source)) `GPLv2/CPALv1``Java`