Best Open Source Communication Projects

Mastodon

Free, open-source decentralized social media platform

Rocket.Chat

The secure communications platform for mission-critical operations.

Mattermost

Mission-critical collaboration for technical teams

Signal

Speak freely with state-of-the-art end-to-end encryption.

Jitsi

Encrypted video meetings without limitations

Zulip

Chat for distributed teams.

Element

Secure collaboration and messaging

Fonoster

Open-source alternative to Twilio

WriteFreely

A clean, minimalist publishing platform for writers.

MiroTalk P2P

Peer-to-peer video calls with end-to-end encryption

MiroTalk

Browser-based video conferencing with maximum quality

Cinny

Matrix client for desktop and web

Helpy

Open source helpdesk software for secure, multi-channel support.

Revolt

An open-source, privacy-respecting chat platform prioritizing user freedom.

SOGo

A fully supported and trusted groupware server.

Twake

The open Digital Workplace for team collaboration.

Movim

Decentralized social platform on XMPP

Friendica

Decentralized social network platform

Briefing

Modern video conferencing solution

Session

An end-to-end encrypted messenger that minimizes sensitive metadata.

Cabal Desktop

P2P community chat platform

Speek

A decentralized, serverless, and completely anonymous chat.

Kontalk

Community-powered encrypted messaging

Schildichat

A Matrix client based on Element with a more traditional messenger experience.