Linux · Internet & Browsers
GUPT
Self-hosted, end-to-end encrypted privacy suite — chat, passwords, notes, bookmarks and ephemeral sharing on Nostr relays.
by besoeasy
Official site: flathub.org
About GUPT
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.
How to install GUPT
- Click Download — the developer's official website opens in a new tab.
- Download the latest version there and run it. Choose Custom/Advanced where offered, and skip any bundled extras.
- Prefer the command line? With Flatpak you can install and update it with: flatpak install flathub com.besoeasy.gupt
- Open GUPT once it finishes installing.
Frequently asked questions
Is GUPT free to download?
Yes. The Download button sends you to flathub.org, the developer's official site, where GUPT is available to download. Flatnic doesn't host or modify any files.
How do I install GUPT from the command line?
With Flatpak, run: flatpak install flathub com.besoeasy.gupt. This installs it from the official source and keeps it updated.
Is GUPT safe?
GUPT downloads directly from the developer. As always, scan the installer with your antivirus and choose Custom setup to skip any bundled extras.
