bitchat

Health v2 · maintenance only

Adoption not part of the score

35966 stars · 5708 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A decentralized peer-to-peer messaging app that combines offline Bluetooth LE mesh networking with internet-based Nostr protocol transport, requiring no accounts, phone numbers, or central servers. It offers end-to-end encryption via the Noise Protocol, IRC-style commands, location-based geohash channels, and multi-hop message relay across nearby devices.

Use cases

• chat without internet or cell service
• send messages during a disaster or network outage
• message privately without giving a phone number
• run a group chat with no central server
• communicate when the internet is censored or shut down
• find nearby people via location-based chat rooms
• relay messages across multiple hops through peers

When to choose

• you need offline messaging that works purely over Bluetooth mesh
• you want censorship-resistant, serverless communication with E2E encryption
• you prefer IRC-style commands and ephemeral, account-free chat
• you want a native iOS/macOS/Android app with a verifiable public-domain source build

When to avoid

• you need guaranteed message delivery or long-term message history
• you require large file sharing or media-heavy group chats
• you need enterprise features like user management or compliance
• you depend on reliable global delivery when no peers or Nostr relays are reachable

Facets

application · maturity active

chat-interface cryptography p2p networking compression messaging-platforms privacy censorship-circumvention mobile-development cross-platform cross-platform bluetooth-mesh bluetooth-le nostr e2e-encryption decentralized-messaging offline-communication irc-style noise-protocol geohash-channels public-domain ios macos android swift mobile

Member repositories

For agents

markdown · JSON · MCP: product_card(name="permissionlesstech/bitchat")