What are some alternatives?
Workplace by Facebook - Connect everyone in your company and turn ideas into action.
MangoApps - Founded in 2007, MangoSpring transforms the way teams work together.
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!
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.
Flock - A faster way for your team to communicate