GUPT is a self-hosted, end-to-end encrypted privacy suite built on Nostr
relays. A privacy-first alternative to Telegram, Signal, WhatsApp, and
Discord — that also replaces your password manager, notes app, and
bookmarks.

• Chat: encrypted DMs and groups with replies, reactions, and mentions
• Calls: peer-to-peer WebRTC voice, video, and screen sharing
• Passwords: encrypted logins with TOTP / 2FA codes and tags
• Notes: private Markdown notes with search and tags
• Bookmarks: encrypted page saves with the gupt-mark bookmarklet
• Secure Share: ephemeral encrypted file and text links — no account needed to open

Everything is encrypted on your device before it ever leaves it. Relays
only store and forward ciphertext, and your identity is a cryptographic
keypair you control — not an account someone else can log, suspend, or
subpoena.

No servers, no accounts, no phone numbers.