What are some alternatives?
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!
Slack - A messaging app for teams who see through the Earth!
Workplace by Facebook - Connect everyone in your company and turn ideas into action.
Samepage - Easy to setup collaborative tool and file syncronization cloud application
Zoho Connect - Zoho Connect is a team collaboration software that helps teams ideate, discuss, and work together, from any place, on any device.
LinkedIn Premium - LinkedIn is a social network helping brands and professionals to connect, identify sales prospects, hire talent, and promote their business.