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Terces

End-to-end encrypted, browser-based secret manager with local storage and passphrase protection.

TypeScriptSecurity
Mar 2026GitHubLive

Terces is an end-to-end encrypted, browser-based secret manager for passwords, API keys, and sensitive notes - all stored locally with passphrase protection. Secrets are encrypted client-side using AES-256-GCM via the Web Crypto API, with keys derived from PBKDF2 and salt. Nothing ever leaves the browser: no backend, no accounts, no sync.

Browser-based end-to-end encrypted secret manager
Browser-based end-to-end encrypted secret manager

All cryptographic operations happen entirely in TypeScript on the client, with data persisted in localStorage. The app includes auto-lock after inactivity and copy-to-clipboard for quick secret access, deployed on Vercel.