TeamSpeak is a proprietary Voice over IP software that allows users to speak on a chat channel with other users, much like a t ...

Mumble was the first and is the most successful and wide spread free and open source software for VoIP. It was the first VoIP ...

Wire is a secure and private messenger for phones, tablets and desktop. Crystal clear voice and video calls, private group cha ...

Formerly known as Curse, Twitch Messenger (also Twitch Desktop App) was acquired by Twitch and rebranded as the desktop and mo ...

Mattermost is an open source, self-hosted Slack alternative. As an alternative to proprietary SaaS messaging, Mattermost bring ...

Slack brings all your communication together in one place. It’s real-time messaging, archiving and search for modern teams.

Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework. It is a great solution for co ...

Telegram is a messaging app created by former VK creators with a focus on speed and security. It’s superfast, simple and free. ...

Gitter is a chat and collaboration tool for developers and users. It's a place for developers to talk.

KEY FEATURES

• Unlimited ...

Riot (formerly Vector) is an opensource interoperable app running on Web, iOS and Android. It is built around chat rooms, both ...

With the rise of widespread government monitoring programs, Tox is an easy to use application that allows you to connect with ...

Ring positions itself as a potential free Skype replacement Open Source and cross-platform. Ring gives you a full control over ...

Matrix.org is a growing ecosystem for open, decentralised chat, VoIP and IoT communication. The Matrix project defines an ope ...