stay in touch with family and friends for free. Get international calling, free online calls and Skype for Business on desktop and mobile
Slack brings all your communication together in one place. It’s real-time messaging, archiving and search for modern teams.
HipChat is group chat built for teams & business. Free for unlimited users, enjoy unlimited group chat, video chat & screen sharing
Yammer seamlessly enables connections to people and information from across your organization that you never knew existed