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.
+330 stars
from 7,763 · score 5.80
Ranked by Attention Score: stars gained over the last 90 complete days
6 repositories by Attention Score · Aug 5, 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.
Keep your sensitive information out of chat logs, emails, and more with encrypted secrets.
Audited & minimal JS implementation of Salsa20, ChaCha and AES
🔓 CLI tool and library to execute padding oracle attacks easily, with support for concurrent network requests and an elegant UI.
:key: Cross-Platform Passwords & Secrets Vault
File transfer solution with end-to-end encryption.