HeySpace - HeySpace is the only free task and simple project management software with communication and collaboration feature.
Sametab - Share company announcements in your coworker's new tab
Slack - A messaging app for teams who see through the Earth!
Shoutboards - Internal announcement platform for better knowledge sharing.
The New Dropbox - Enterprise software portal for team collaboration
Skarpline - Skarpline provides centralized enterprise messaging, link sharing and file management to improve productivity.