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OPENCTRL

Category

Communication

Chat and team messaging.
Alternatives toMicrosoft TeamsSlack

  • Element

    Communication

    Secure messaging and collaboration on the open Matrix network.

    • Use online
    • Community
    by ElementFree plan

  • Zulip

    Communication

    Open-source team chat organized by topic-based threads.

    • Use online
    • Community
    by Kandra LabsFree plan

  • Rocket.Chat

    Communication

    Open-source team chat and communications platform.

    • Needs technical setup
    • Community
    by Rocket.Chat TechnologiesFree to self-host

  • Mattermost

    Communication

    Self-hostable team messaging and collaboration.

    • Needs technical setup
    • Community
    by Mattermost, Inc.Free to self-host