Telbee.io - telbee adds voice messaging to podcasts, websites, social media and email to easily hear from and build human relationships with your customers and community - save time, reduce frustration, and gain sales, understanding and fans
Keybase Chat - End-to-end encrypted chat built into Keybase
Echo - Golang HTTP server framework
Spike - Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.
Yac - Take your time back from Zoom & Slack
Seald - Keep your conversations secure, everywhere.