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.
One Word Domains - Database of all available one-word domains
Slack - A messaging app for teams who see through the Earth!
Undeveloped - Domains you never thought were available
Flow - Stop managing projects from your inbox.
Domainz.io - Premium domains, for not so premium prices