OPEN MESSAGING AND COLLABORATION: You can chat with anyone else in the Matrix network, whether they’re using Element or another Matrix app, and even if they are using a different messaging system of the likes of Slack, IRC or XMPP.
sChat (or SimpleChat or SimpleChat.Support) is an open source and very basic live chat app written by a JavaScript/Meteor developer. It is free and MIT licensed. Chat for distributed teams - Zulip 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. Top 10 Best Messaging Apps Available for Linux in 2020 Skype [not open source] I know starting the list with a Microsoft product is not a good idea. But …
6 Open Source Messaging Apps More Secure Than Skype
Best encrypted instant messaging apps 2020 for Android Signal is widely regarded as the gold standard of encrypted messaging apps, not least because its encryption engine is open source and available for anyone to inspect. That doesn't make it any Chat / Messaging App Source Code for Android, iOS and Web
Pricing - Rocket.Chat
Zoom Alternatives: 10 Other Video Chat Apps to Use | Time Apr 13, 2020 Mumble Mumble is a free, open source, low latency, high quality voice chat application. Mumble was the first VoIP application to establish true low latency voice communication over a decade ago. But low latency and gaming are not the only use cases it shines in.