Apps similar to Buzz include Element, which is open source and free for personal use. Other options are Discord, Trello, Matrix and Stoat Chat. There's no shortage of Group Chat Apps like Buzz, with more than 50 alternatives for the web, Android, Windows, iPhone and Mac.
Lightweight communication platform with unlimited channels, seamless voice and video, screen sharing, private file sharing, advanced task and calendar tools, robust privacy features, emoji and thread support, and multi-platform efficiency for gaming or team communities.
Open-source chat server supporting real-time group, direct, and private messaging, video calls, file sharing, helpdesk chat, API integrations, desktop notifications, emojis, LDAP authentication, cross-platform apps, and customizable extensions for teams.
United States
Conversations is a privacy focused, open source XMPP Texting [Jabber] client for Android 4.0+ smart phones with wife-approved easy encryption [OTR, OMEMO, or GPG].
Germany
EU
Peer-to-peer group chatting over Tor and IPFS, with local-first encrypted messaging and no central servers, offers privacy-focused decentralized collaboration for teams, supporting desktop and mobile. FOSS, open to contributors, and avoids surveillance-based tracking.
United States
Basecamp is a web-based project collaboration tool that allows groups of people to share files, meet deadlines, assign tasks, and centralize feedback.
United States
Free, privacy-focused chat platform for gaming communities offering servers, channels, roles, low-latency voice, video, screen sharing, 5GB uploads, message translation, end-to-end encrypted DMs and calls, forum features, calendar events, and no paid tiers.
United States
The best Discord alternative. Mezon is a Live, Work, and Play platform. It’s perfect for gaming and chilling with friends, or even building a global community. Customize your own space to talk, play, and hang out.
Vietnam
Open-source platform unifying project, document, issue, and task management with real-time team collaboration, instant messaging, video conferencing, and GitHub bidirectional sync, all in one customizable workspace for developers and product teams.
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.
FranceEU
Powered by WebRTC, Real-time video call, chat room and screen sharing entirely browser based.
ItalyEU
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)
Self-hosted communication platform with secure audio, video, chat, web conferencing, screensharing, advanced encryption, and metadata privacy, running on user-controlled servers, supporting web and mobile apps, and eliminating third-party data exposure.
GermanyEU
![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)
