Chalk - Chalk is a calculator that tries to do right what others do wrong.
Roomvine - Chatrooms for real life venues, neighborhoods and events
Public - Group chats.
Berkanan - Chat with people nearby. Even offline, on an ✈️.
Slaask - Slaask enables you to set up a dedicated live chat channel on your Slack.
Stealthy: Secret Messenger - Chat anonymously with friends & strangers