Open Source Corteza Messaging Alternatives

    Corteza Messaging is described as 'secure, high performance, open source Slack alternative that allows your teams to collaborate more efficiently, as well as communicate safely with other organisations or customers'. There are more than 25 alternatives to Corteza Messaging for various platforms. The best alternative is Element, which is both free and Open Source. Other great apps like Corteza Messaging are Matrix.org (Free, Open Source), Mattermost (Freemium, Open Source), Rocket.Chat (Freemium, Open Source) and Zulip (Free Personal, Open Source).

    The list of alternatives was last updated Feb 25, 2021