Colibri Social is described as 'Colibri is an open source chat platform built on the AT protocol for communities big and small. It gives you the ability to create communities, manage members, and communicate through text, voice, and forum channels, all while maintaining true ownership of your data' and is a Group Chat app in the social & communications category. There are more than 50 alternatives to Colibri Social for a variety of platforms, including Web-based, Windows, Linux, Android and Mac apps. The best Colibri Social alternative is Signal, which is both free and Open Source. Other great apps like Colibri Social are Telegram, Element, Discord and Matrix.
Decentralized chat platform built on the nostr protocol with support for multi-group communities, event calendars, threads, private messaging, web of trust, customizable access controls, monetization via zaps, full privacy, and white-label options for branding.
Decentralized social and blog platform based on XMPP, enabling self-hosting, cross-network chat, video calls, and group collaboration. Users control and migrate their data, communicate across various networks, and access services from any node while preserving privacy and open-source principles.
Open-source chat platform providing community-focused group messaging, video calls, profile customization with animated avatars, custom emojis, tags, post creation, discovery of communities, and full source code access on GitHub. Entirely donation-funded.
![Profile Interface [PC - 2025]](https://img.alternativeto.net/s/618x394/avif/nerimity_993222_full.png)
![Messages View [PC - 2025]](https://img.alternativeto.net/s/618x394/avif/nerimity_281418_full.png)
![Server Discovery [PC - 2025]](https://img.alternativeto.net/s/618x394/avif/nerimity_282508_full.png)
![Server Settings [PC - 2025]](https://img.alternativeto.net/s/618x394/avif/nerimity_628028_full.png)
Open source chat platform offering end-to-end encrypted messaging, uncensored communication, markdown support, file sharing, self-hosting, multi-device sync, server management, voice or video calls, no data tracking, transparent codebase, and community-driven development.
An ad-free, theme-able, chatting platform built for privacy and security while offering a huge feature set including bot support, moderation, voice calls, screen sharing, video, embeds and many other features, it's built to be reliable and self-hosted while still allowing...
Valour is an open-source, privacy focused alternative to platforms like Discord or Slack, developed by a small team of volunteers. The app has been in development for over three years and is currently in it's alpha stages of testing.
Offers real-time chat with friends, supports group messaging, organizes contacts by favorites and categories, enables media sharing with GIFs and videos, provides customizable notifications, allows invite links, and is accessible on desktop or mobile for gaming sessions.
Ventrilo is a real-time voice chat software for group communications with surround sound support.
Open source encrypted group-chat platform focused on privacy and efficiency, featuring Rust-based backend for speed, customizable interface, minimal data collection, real-time messaging, community-driven improvements, and ergonomic design for various use cases.
Garena is a free downloadable software provided by Ocean Global Holding. Garena, short for Global Arena, is a multifunction platform that allows gamers to chat, challenge opponents, and play their favorite games online with millions of gamers world-wide.
Twake Chat is a secure, open source messaging platform designed for enterprises. It offers seamless integration of chat, video conferencing, file sharing, and email, and more.
United States
France
EU
United Kingdom
Canada