Cost / License
- Free
- Open Source (BSD-3-Clause)
Platforms
- Linux
Mumble is described as 'Open source, low-latency voice chat offering high quality audio, secure encryption, self-hosting, in-game overlays, positional audio, and granular permissions' and is a very popular Group Chat app in the social & communications category. There are more than 50 alternatives to Mumble for a variety of platforms, including Web-based, Android, Windows, iPhone and Linux apps. The best Mumble alternative is Element. It's not free, so if you're looking for a free alternative, you could try Element or Discord. Other great apps like Mumble are TeamSpeak, Element X, Echoed and Mirotalk.
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.

A creation app with real-time transcription. Collaborate or go solo to bring your audio thoughts, ideas, and conversations to life. Ignite your creative spark ?




Lifesize Go gives you instant access to your own high-quality free video meeting space. Host meetings with up to eight participants from your phone or laptop without needing to download an application or install updates.




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.




TeamTalk 4 is a conferencing system which enables a group of people to collaborate and share information. Every member of a group can communicate with other members in real time using both audio and video. All that is needed is a microphone and a web camera.




With GSC, you can pick from any of 14 worldwide datacenters to host your own free voice server. Get full rights to create rooms, kick and ban users, and personalize your voice server. Plus, your settings are always saved - the voice chat room doesnt disappear when you log off.


The application is a push-to-talk (PTT) walkie-talkie for consumers and business and available for Android, iOS, Blackberry, Windows Phone, Windows PC, rugged mobile devices and two-way radios.




Small program mainly aimed to provide a simple user interface for making VoIP calls with Asterisk PBX (an open source VoIP PBX).
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.

Make video calls to anybody in the world with a private connection. Share the conversation by sharing url.

This simple Matrix client written in Python allows you to send and receive messages and files, verify other devices, and interact with your Matrix account or other Matrix users in many ways. You use it from the terminal (CLI) or integrate it into other simple Python programs.