#CryptPad is a collaboration suite that is #end-to-end-encrypted and open-source. It is built to enable collaboration, synchronizing changes to documents in real time. Because all data is encrypted, the service and its administrators have no way of seeing the content being edited and stored.

https://github.com/cryptpad/cryptpad

GitHub - cryptpad/cryptpad: Collaborative office suite, end-to-end encrypted and open-source.

Collaborative office suite, end-to-end encrypted and open-source. - GitHub - cryptpad/cryptpad: Collaborative office suite, end-to-end encrypted and open-source.

^GitHub