# simplex-chat/simplex-chat

SimpleX - the first messaging network operating without user identifiers of any kind - 100% private by design! iOS, Android and desktop apps 📱!

Repository: https://github.com/simplex-chat/simplex-chat
Canonical: https://ross.abutalabs.com/products/simplex-chat
Homepage: https://simplex.chat
Language: Haskell
License: AGPL-3.0
License Family: copyleft
Topics: chat, protocol, e2ee, privacy, haskell, security, messaging, encryption, double-ratchet
Last push: 2026-08-26T18:40:29+00:00

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 98, longevity 100
- inputs: {"age_days": 2447, "days_push": 7, "days_rel": 15, "gap_med": 17.0, "n_releases_24m": 35}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 19316, forks 1355 (observed 2026-08-28T04:11:27.588394+00:00)

## What it is
SimpleX Chat is a private messaging platform and set of mobile/desktop apps that operate without any user identifiers, delivering end-to-end encrypted messages, files, and audio/video calls over a decentralized relay network. It includes a terminal CLI, self-hostable SMP/XFTP servers, and a documented chat protocol.

## Use cases
- chat privately without sharing a phone number or user ID
- send end-to-end encrypted messages, files, and voice notes
- make encrypted audio and video calls
- run my own messaging relay server
- join or create anonymous groups and channels
- use a private messenger from the terminal
- avoid metadata tracking by messaging servers

## When to choose
- you need messaging with no user identifiers and strong metadata privacy
- you want self-hostable servers and an open, audited protocol
- you need multi-platform apps plus a CLI client

## When to avoid
- you need large group calls or mainstream social features
- your contacts all use WhatsApp/Signal and interoperability matters more
- you need a lightweight library to embed rather than a full app

## Facets
- artifact type: application
- maturity: active
- function: chat-interface, cryptography, security, self-hosted, cli
- domain: privacy, messaging-platforms, security, censorship-circumvention, cross-platform
- platform: cross-platform, cli, self-hosted
- tags: e2ee, messenger, double-ratchet, no-user-ids, anonymous-messaging, haskell, smp-protocol, xftp, private-messaging, android, ios, desktop

## Member repositories
- simplex-chat/simplex-chat (main) score 99

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:27.588394+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 2026-08-29T17:00:20.195945+00:00, confidence not recorded.
  - readme: https://github.com/simplex-chat/simplex-chat (fetched 2026-08-28T04:11:27.588394+00:00, sha ab3288e70927)
  - homepage: https://simplex.chat (fetched 2026-08-29T07:58:41.003197+00:00, sha cb3a4b277a00)
  - site_page: https://simplex.chat/docs/guide/readme.html (fetched 2026-08-29T07:58:41.016887+00:00, sha 64816f23a140)
  - site_page: https://simplex.chat/docs/guide/send-messages.html (fetched 2026-08-29T07:58:41.019152+00:00, sha bc864e407644)
  - site_page: https://simplex.chat/docs/guide/secret-groups.html (fetched 2026-08-29T07:58:41.021213+00:00, sha ee833287f708)
  - site_page: https://simplex.chat/docs/guide/chat-profiles.html (fetched 2026-08-29T07:58:41.023137+00:00, sha 4fd38ff9748f)
  - site_page: https://simplex.chat/docs/guide/managing-data.html (fetched 2026-08-29T07:58:41.026100+00:00, sha 1dbf32f8ff39)
  - site_page: https://simplex.chat/docs/guide/audio-video-calls.html (fetched 2026-08-29T07:58:41.028602+00:00, sha f26e55e32a0c)
  - site_page: https://simplex.chat/docs/guide/privacy-security.html (fetched 2026-08-29T07:58:41.030720+00:00, sha 67bad1884aa0)
  - site_page: https://simplex.chat/docs/guide/app-settings.html (fetched 2026-08-29T07:58:41.032514+00:00, sha 10bce1e376d1)
- Data as of 2026-08-30T08:39:29.467469+00:00.