Bitrix24 is free social intranet software available both in cloud and on premise. It's 100% free when used by small teams.
Bitrix24 comes with over 30 free intranet tools, open source code, mobile apps, API, content management systems, social and classic interfaces, and integrations for Active Directory,
SharePoint lists, Outlook and MS Exchange. Unlimited user plans are available.
Unlimited free users
Cloud intranet or on premise intranet
Unlimited user plans for cloud & self hosted plans
With over 30 intranet tools, Bitrix24 can seem a bit overwhelming at first. If you encounter any problems, please read Bitrix24 manual
in order to better understand how each intranet component works.
If you are interested in deploying Bitrix24 on your own server, require access to source code, would like to integrate Bitrix24 with other tools you are currently using download trial version