Polymail - Native email app for email productivity.
Planetary - Decentralized social media by and for the people.
Airmail - Airmail is a lightweight and lightning fast mail client for Mac.
DeSo - DeSo is a new layer-1 blockchain built from the ground up to scale decentralized social applications to one billion users.
Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
Manyverse - A social network off the grid