Brandpa - Domain names for startups
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.
DomainWatch - Domain Monitoring Made Easy
Slack - A messaging app for teams who see through the Earth!
Nuage - Nuage provides domain naming services.
Rendevu - Rendevu centralizes the different tools your team uses (GSuite, Slack, Trello) and streamlines your workflow.