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Looking for a Slack alternative?

The best Slack alternatives

5 apps listed on OPENCTRL can replace Slack.

About Slack

Team messaging and channels.

slack.com

Slack pricing

Pricing not verified

Ready to use, no setup

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  • 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

  • Huly

    Project Management

    An all-in-one project management platform combining tasks, chat and docs.

    • Use online
    • Community
    by Hardcore EngineeringFree plan

Needs technical setup

Free to use, but someone has to install it on a server first. Good if you're technical or have IT help.

  • 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

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OPENCTRL is not affiliated with Slack. Slack is a trademark of its owner, used here only to describe what these apps replace.