Top Open Source Encrypted Communication Tools in 2026
A curated collection of the 10 best free and open-source Encrypted Communication tools in 2026. Compare features, GitHub stars, tech stacks, and self-hosted software.
Wire
Secure end-to-end encrypted messenger for organizations
Stars2,544Last commit8mo agoLicenseGPL-3.0
Tuta
Privacy-first encrypted email, calendar & contacts
Stars7,875Last commit10d agoLicenseGPL-3.0
Quiet
Peer-to-peer encrypted messaging without servers
Stars2,642Last commit13d agoLicenseGPL-3.0
Stoat
Open-source group chat for communities
Stars3,256Last commit11d agoLicenseOpen Source
Signal
Privacy-first encrypted messaging app
Stars29,260Last commit11d agoLicenseAGPL-3.0
SAMA
Open source chat server for mobile and web apps
Stars158Last commit1mo agoLicenseGPL-3.0
Mattermost
Secure collaboration platform for mission-critical teams
Stars38,913Last commit10d agoLicenseOpen SourceFluxer
Privacy-first open source chat app with voice & video
Stars10,138Last commit10d agoLicenseAGPL-3.0
Element
Secure decentralized team messaging & collaboration
Stars13,408Last commit10d agoLicenseAGPL-3.0
Cinny
Privacy-focused Matrix client
Stars3,865Last commit27d agoLicenseAGPL-3.0
Loading more tools...
Showing 10 of 10 open-source tools