Open Source Social & Communications Apps

An encrypted messaging app focused on privacy, supporting texts, calls, photos, videos, files, and group chats, with no ads or trackers.

A secure collaboration app with end-to-end encryption and interoperability across web, desktop, and mobile. Includes chat, voice, and video calls.

Federated and open-source social network with no ads, 500-character limit, custom emojis, and content warnings, emphasizing privacy and personal interaction.

Facilitates device communication, enabling notifications, SMS replies, file sharing, and remote control across multiple operating systems.

Open protocol for decentralized, end-to-end encrypted communication supporting instant messaging, VoIP, IoT, data persistence, and silos bridging over federated servers.

Pidgin is a chat program which lets you log into accounts on multiple chat networks simultaneously. This means that you can be chatting with friends on XMPP and sitting in an IRC channel at the same time.

Federated image sharing platform prioritizing privacy, safety, and user control, ad-free operation, no algorithms, open-source, and supports self-hosting.

Lemmy is similar to sites like Reddit, Lobste.rs, or Hacker News: you subscribe to forums you're interested in, post links and discussions, then vote, and comment on them. Behind the scenes, it is very different; anyone can easily run a server, and all these servers are...

Instant messaging with text, voice, video calling, screen sharing, privacy controls, customizable permissions, moderation, bots, and open-source design.

An open social network that gives creators independence from platforms, developers the freedom to build, and users a choice in their experience.

With the rise of widespread government monitoring programs, Tox is an easy to use application that allows you to connect with friends and loved ones without anyone else listening in.

Free open-source platform offering instant messaging, VoIP, private DMs, group chats, voice, video, markdown, moderation, search, customization, and self-hosting.

Open source, low-latency voice chat offering high quality audio, secure encryption, self-hosting, in-game overlays, positional audio, and granular permissions.

Encrypted platform supporting private, identifier-free messaging, group conversations, file sharing, and audio/video calling, using a double-ratchet protocol.

Free, open-source conferencing with end-to-end encryption, group chat, screen sharing, Etherpad integration, customizable setup, and privacy by default.

Open source peer-to-peer platform for voice and video calls, encrypted chat, file sharing, conference support, and cross-platform privacy features.

Diaspora is a federated social networking service, designed to be a more privacy-aware alternative to Facebook . Share what you want, with whom you want.

User-friendly messaging platform with end-to-end encrypted chats, voice and video calls, self-deleting messages, file sharing features, and customizable interface.

Unifies chats from 14 messaging networks in a single inbox, ensures privacy with on-device connections, and offers reminders, scheduling, and sync across devices.

Censorship-resistant peer-to-peer messaging that bypasses centralized servers. Connect via Bluetooth, Wi-Fi or Tor, with privacy built-in.

Molly is an independent Signal fork for Android.

Uses email as a decentralized chat platform with modern interface, open source code, no central servers, strong privacy controls, and no account signup.

Threaded group chat with topics for live or async collaboration, open-source, supporting self-hosted or cloud use, suited for organized team discussions.

Open source, decentralized communication platform with encrypted chat, voice and video calls, file sharing using anonymous tunnels, forums, and channels.

Open source desktop app integrating messaging, email, productivity tools and custom services with workspaces, Todo panel, privacy features, resource saving and sync.