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.
United Kingdom![Profile Interface [PC - 2025]](https://img.alternativeto.net/s/309x197/jpeg/nerimity_993222_full.png)
![Messages View [PC - 2025]](https://img.alternativeto.net/s/309x197/jpeg/nerimity_281418_full.png)
![Server Discovery [PC - 2025]](https://img.alternativeto.net/s/309x197/jpeg/nerimity_282508_full.png)
![Server Settings [PC - 2025]](https://img.alternativeto.net/s/309x197/jpeg/nerimity_628028_full.png)
Free, browser-accessed community platform with real-time text chat, voice and video calls, topic channels, encrypted direct messages and files, easy email sign-up, member and staff controls, invite links, moderator audit log, and full privacy settings.
United States
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.
United States
Conduit is a simple, fast and reliable chat server powered by Matrix. Conduit is an alternative to Synapse and tries to be lightweight and easy to install, but it is still in development.
GameVox is a voice, video, and text chat platform for gaming communities, built by LightSpeed Gaming — a small, independent company with well over a decade of experience in voice communication and game server hosting. Self-funded. No investors, no ads, no data sales.
United States
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.
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.
United States
Real-time chat platform structured with threads, custom feeds, project tagging, and AI moderation. Provides privacy controls, instant file and code sharing, multiple viewing modes, moderator tools, light/dark modes, and unifies collaboration for organizations and communities.
United States
kChat is a secure instant messaging for businesses, which makes it possible to discuss matters live and organise projects.
Switzerland
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.
Germany
EU
Campfire is an installable, self-hosted group chat system. Easily invite people. Make rooms. @mentions, DMs, and mobile support. The basics done right. And since you get the code and host it yourself, you can customize it however you’d like for your own use.
United States
0xchat is a secure chat app built on the Nostr protocol. It prioritizes security, featuring private key login, encrypted private chats and contacts, encrypted group chats.
![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)
