Matrix client for federated, E2EE-capable real-time communication.
chatmatrixfederatione2ee
Communication & Collaboration
Open protocols and self-hostable stacks for teams that outgrow closed silos—matrix, team chat, and secure messaging. Multi-protocol desktops like Pidgin still matter where IRC, XMPP, and plugin ecosystems overlap.
Tools in this category (19)
E2EE messenger with conservative security posture and broad adoption.
messaginge2eemobile
Team messaging platform with strong self-hosted enterprise adoption.
team-chatenterpriseself-hosted
Also strong
Team chat platform with channels, threads, video, and broad integration marketplace.
chatteamself-hosted
Also strong
Thread-first team chat combining email-like topics with real-time messaging.
chatthreadsself-hosted
Honorable mention
Messenger using email as transport—chat over your existing IMAP/SMTP accounts.
chatemailprivacydecentralized
Open standard for decentralized, encrypted real-time communication; reference server Synapse.
federationchate2ee
Honorable mention
Open programmable telephony APIs (Twilio-class narrative).
voipcpaasapi
Secure WebRTC video conferences embeddable or standalone.
webrtcvideomeetings
Honorable mention
E2E-encrypted team chat, calls, and file sharing.
chate2eeteams
Also strong
Decentralized messaging with privacy-first routing.
messagingprivacydecentralized
Honorable mention
Lightweight Matrix homeserver in Rust.
matrixrustfederation
Honorable mention
Real-time XMPP server for chat and presence.
xmppchatserver
Honorable mention
Groupware server for calendars, contacts, and email integration.
groupwarecaldavemail
Honorable mention
Multi-protocol chat client with libpurple plugins for XMPP, IRC, and various legacy networks.
chatxmppirclibpurple
Honorable mention
Telegram Desktop messaging app
definitive-opensource
Honorable mention
Legcord is a custom client designed to enhance your Discord experience while keeping everything lightweight.
definitive-opensource
Honorable mention
bluetooth mesh chat, IRC vibes
definitive-opensource
Honorable mention
Mumble is an open-source, low-latency, high quality voice chat software.
definitive-opensource