Berty
Chat & CommunicationPeer-to-peer messaging app that works offline
Replaces WhatsApp, Signal
Best Offline-First Chat & Communication for self-hosting
The 8 best Offline-First chat & communication you can self-host, ranked by community traction.
qTox
Chat & CommunicationPeer-to-peer encrypted messaging and calls over Tox
Replaces Skype, WhatsApp
Tox
Chat & CommunicationPeer-to-peer encrypted messaging protocol and core
Replaces Skype, Discord
Toxic
Chat & CommunicationTerminal-based client for the Tox messaging network
Replaces Skype, WhatsApp
Delta Chat
Chat & CommunicationDecentralized messenger built on top of email
Replaces WhatsApp, Signal
Briar
Chat & CommunicationPeer-to-peer encrypted messaging that works offline
Replaces Signal, WhatsApp
Wesh Network
Chat & CommunicationP2P encrypted messaging protocol toolkit
Replaces Signal, WhatsApp
Jami
Chat & CommunicationFully distributed, peer-to-peer encrypted communication
Replaces Skype, Zoom
No apps match these filters.
Every option here is open-source and self-hostable, tagged Offline-First within the chat & communication category. Compare them on the individual app pages for setup difficulty and resource requirements.