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!
LinkedIn Premium - LinkedIn is a social network helping brands and professionals to connect, identify sales prospects, hire talent, and promote their business.
VOGSY - Professional service automation tool built on Google G Suite
Salesforce Chatter - Salesforce Chatter provides a suite of collaboration features to any application built on Force.com.
Office Timesheets - Professional Services Automation
Workplace by Facebook - Connect everyone in your company and turn ideas into action.