Self-host with Docker · Yantr
GUPT
Anonymous, end-to-end encrypted messenger on Nostr with WebRTC calls.
1
Ports
1
Notes
3
Use Cases
About
What GUPT does
GUPT is a self-hosted, anonymous, end-to-end encrypted messenger with no accounts required. Built on Nostr relays with WebRTC for voice and video calls, it supports encrypted media uploads, group rooms, offline caching, and ships as an installable PWA.
Install Flow
How to self-host GUPT
GUPT can be deployed with standard Docker Compose using the Yantr app catalog. This page collects the basic information searchers usually need first: what GUPT does, which Docker image Yantr uses, default ports, deployment notes, and where to find the original compose template.
After deployment, Yantr lets you publish additional ports from the stack page using Docker-style syntax. Use 8080:8080 for a fixed host port or just 8080 to let Docker assign a random port.
Use Cases
What people run it for
- Chat anonymously with end-to-end encrypted direct messages without creating an account or providing personal information such as a phone number or email address.
- Host private group rooms for your team or community over your own Nostr relays, keeping all messages encrypted and off centralised servers.
- Make encrypted WebRTC voice and video calls directly from the browser without installing any native app.
Technical Details
Ports, image, and service metadata
Ports
| Port | Protocol | Label |
|---|---|---|
| 8000 | HTTP | Web UI |
Docker Image
ghcr.io/besoeasy/gupt:latest
Service Name
gupt
Notes
Things to know before you deploy
- No backend required — the app connects directly to public or private Nostr relays.
Related Apps
More tools you might pair with GUPT
Page generated 2026-06-23T15:50:08.758Z