Butter - Butter is a newly launched chatting application that focuses more on the privacy of its users.
Zulip - Chat for distributed teams. Zulip combines the immediacy of real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones.
Mapped - Mobile app that makes your startup journey easier.
Slack - A messaging app for teams who see through the Earth!
joinAir.com - Smart HR platform for small & medium sized businesses
Rendevu - Rendevu centralizes the different tools your team uses (GSuite, Slack, Trello) and streamlines your workflow.