Nextcloud Hub - On-premises, enterprise collaboration solution for documents, emails, calendars and more.
Bitrix24 - Bitrix24 is a free (for small businesses) social enterprise platform. It is a united work space which handles the many aspects of daily operations and tasks. Create your own social intranet in minutes!
GreenOrbit - Intranet software with everything you need, built in
Workplace by Facebook - Connect everyone in your company and turn ideas into action.
Oak Engage - Oak Engage is a digital workplace for enterprises that need to communicate with their workforce. Connect your teams. Engage your people.
LinkedIn Premium - LinkedIn is a social network helping brands and professionals to connect, identify sales prospects, hire talent, and promote their business.