# threema-ch/threema-web

The Threema Web application.

Repository: https://github.com/threema-ch/threema-web
Canonical: https://ross.abutalabs.com/products/threema-web
Language: TypeScript
License: AGPL-3.0
License Family: copyleft
Topics: threema, web, webclient, messenger, angularjs
Last push: 2026-08-23T06:16:35+00:00

## Health v2 (maintenance only)
Score: 92/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 79, longevity 100
- inputs: {"age_days": 3493, "days_push": 10, "days_rel": 61, "gap_med": 75, "n_releases_24m": 8}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1069, forks 110 (observed 2026-08-28T04:03:27.820965+00:00)

## What it is
Threema Web is the official browser-based web client for Threema, a privacy-focused end-to-end encrypted mobile messenger. It mirrors the mobile app to the desktop over WebRTC or encrypted WebSockets using SaltyRTC signaling, keeping all data end-to-end encrypted.

## Use cases
- use threema messenger from a desktop browser
- mirror my phone's encrypted chats to my computer
- self-host a web client for threema
- send and receive threema messages without my phone in hand
- run a privacy-focused web messenger client in docker

## When to choose
- you use Threema and want to chat from a desktop browser
- you want end-to-end encryption preserved on the web client
- you prefer self-hosting the web client via the official Docker image

## When to avoid
- you need a native desktop app with new features - development is in maintenance mode pending Threema for Desktop 2.0
- you don't use Threema - this client only works with a paired Threema mobile app
- you want a general-purpose chat framework to build on

## Facets
- artifact type: application
- maturity: maintenance
- function: websocket, cryptography, chat-interface
- domain: messaging-platforms, privacy, web-development
- platform: browser, self-hosted
- tags: threema, messenger, webclient, end-to-end-encryption, webrtc, saltyrtc, angularjs, secure-messaging, web-server, docker, typescript

## Member repositories
- threema-ch/threema-web (main) score 92

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:27.820965+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:54:36.419898+00:00, confidence not recorded.
  - readme: https://github.com/threema-ch/threema-web (fetched 2026-08-28T04:03:27.820965+00:00, sha 7149b1df3c98)
- Data as of 2026-08-30T08:39:29.467469+00:00.