Matrix.org Alternatives

Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.

Open Source free

Fast, simple & secure messaging. Privacy that fits in your pocket.

Open Source

VoIPstudio is an award-winning VoIP system that offers businesses of all sizes a scalable communication solution. It’s inexpensive, easy-to-use, offers a full suite of PBX features, and is fully integrated for CRM.

Try for free paid Free Trial $4.99 / Monthly (User)

Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.

Open Source

Mattermost is an open source alternative to Slack.

Open Source

Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.

Open Source

A messaging app for teams who see through the Earth!

Send messages, files, create groups and make Tox to Tox audio and video calls. Securely.

Open Source

Step up your game with a modern voice & text chat app. Crystal clear voice, multiple server and channel support, mobile apps, and more.

Open Source

Don't bother with chat apps that don't respect your privacy. Revolt is a brand new chat platform designed around you.

Open Source

Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.

Chat for distributed teams. Zulip combines the immediacy of real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones.

Open Source

WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.

free

Open-source video calling and chat platform.