1.tutao / tutanota
Tuta is an email service with a strong focus on security and privacy that lets you encrypt emails, contacts and calendar entries on all your devices.
+129 stars
from 7,964 · score 4.87
Ranked by Attention Score: stars gained over the last 30 complete days
5 repositories by Attention Score · Oct 4, 2026 – Nov 2, 2026 (UTC)
Tuta is an email service with a strong focus on security and privacy that lets you encrypt emails, contacts and calendar entries on all your devices.
Audited & minimal JS implementation of Salsa20, ChaCha and AES
File transfer solution with end-to-end encryption.
Keep your sensitive information out of chat logs, emails, and more with encrypted secrets.
🔓 CLI tool and library to execute padding oracle attacks easily, with support for concurrent network requests and an elegant UI.