Alternatives to Kato for all platforms with any license

  • Slack icon

    Slack

    Slack brings all your communication together in one place. It's real-time messaging, archiving and search for modern teams.

    Freemium Mac Windows Linux Web / Cloud Android iPhone ... Apple Watch Electron / Atom Shell

  • Trillian icon

    Trillian

    Trillian is an instant messaging app that works on phones, tablets, and desktops while keeping your chats neatly synchronized between...

    Freemium Mac Windows Linux Web / Cloud Android iPhone ... Blackberry iPad

  • Mattermost icon

    Mattermost

    Mattermost is an open source, self-hosted Slack -alternative As an alternative to proprietary...

    Open Source Mac Windows Linux Android iPhone Android Tablet ... iPad Self-Hosted JavaScript Go (Programming Language)

  • Glip icon

    Glip

    Glip is instant messaging for teams and businesses to communicate and get work done at the same time. In Glip you work where your...

    Freemium Mac Windows Web / Cloud Android iPhone Android Tablet ... iPad

  • HipChat icon

    HipChat

    HipChat is an instant messaging service designed for companies and teams. It has persistent chat rooms, one-to-one chat, searchable...

    Freemium Mac Windows Linux Web / Cloud Android iPhone ... Android Tablet iPad Self-Hosted Apple Watch

  • Matrix.org icon

    Matrix.org

    Matrix is an open standard for decentralized persistent communication over IP. It can be used for decentralised group chat, ...

    Open Source Mac Windows Linux Web / Cloud Android iPhone ... Android Tablet iPad Self-Hosted WebRTC Python JavaScript Go (Programming Language) Java Perl

  • Hack Chat icon

    Hack Chat

    hack.chat is a minimal, distraction-free chat application. Channels are created and joined by going to...

    Open Source Web / Cloud Android Self-Hosted

  • Disa icon

    Disa

    Unified Messaging is awesome! Disa is your new messaging hub. Conversations from different services can seamlessly be joined together...

    Open Source Android Android Tablet Kindle Fire

  • qiscus icon

    qiscus

    qiscus organizes your work discussions into rooms and topics to help your team become more efficient and productive.

    Free Personal Mac Windows Linux Web / Cloud Android iPhone ... Chrome OS iPad

  • Flock icon

    Flock

    Flock is a team communication and collaboration tool that enables employees in teams to ‘Get work done, faster’

    Freemium Mac Windows Web / Cloud Android iPhone Chrome OS ... Android Tablet Windows Phone iPad

  • Sameroom icon

    Sameroom

    Sameroom helps connect chatrooms (even when they’re running on completely different services).

    Commercial Web / Cloud

  • Exselo Desktop icon

    Exselo Desktop

    Outlook and desktop search to help you search and find information from your files, emails and documents on your computer. Now also...

    Free Mac Windows

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  • AVAILO icon

    AVAILO Discontinued

    AVAILO is a business communication app for teams. One place for internal and external communications, open groups for your team...

    Free Android iPhone Android Tablet iPad

  • Slenke icon

    Slenke

    Slenke is an internal social network for your company to securely communicate, share files, manage projects, organize tasks, track...

    Freemium Mac Windows Web / Cloud

  • JANDI icon

    JANDI

    JANDI is a group-oriented enterprise messaging platform with an integrated suite of collaboration tools for workplace.

    Freemium Mac Windows Web / Cloud Android iPhone

  • Protonet SOUL icon

    Protonet SOUL

    Extendable cloud-based team communication and business collaboration app that you can easily host on your own Private Cloud Server if...

    Commercial Web / Cloud Android iPhone

  • uShare.to icon

    uShare.to

    Team Communication for your 'extended' team across company boundaries - clients, partners, vendors etc.

    Freemium Windows Web / Cloud Android iPhone Android Tablet iPad

  • Typetalk icon

    Typetalk

    Typetalk is a collaborative chat app designed for team collaboration and discussions via instant messaging. The service allows users...

    Freemium Mac Windows Web / Cloud Android iPhone

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  • Circuit icon

    Circuit

    Circuit is voice, video, screen sharing, messaging, and file sharing in a single view.

    Freemium Mac Web / Cloud Android iPhone Android Tablet iPad ... Apple Watch

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