• 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

  • 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

  • Let's Chat icon

    Let's Chat

    Self-hosted chat for small teams. Features and Stuff BYOS (bring your own server) Persistent messages Multiple...

    Open Source Self-Hosted

  • eXo Platform icon

    eXo Platform

    eXo Platform is a Social Intranet designed for enterprises. It helps people work together in a collaborative workplace.

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

  • Gitter icon

    Gitter

    Where developers come to talk. Gitter.im is a GitHub based chat and collaboration tool for developers and users.

    Freemium Mac Windows Linux Web / Cloud Android iPhone

  • Campfire icon

    Campfire

    Campfire is a simple web-based real-time group chat tool for business. It makes real-time communication with 2-60 people as simple as...

    Commercial Web / Cloud iPhone

  • Kandan icon

    Kandan

    Open Source private chat server. Your own private Chat server in minutes, plus additional features. No credit card required. A fast...

    Open Source Web / Cloud Self-Hosted Ruby on Rails

  • 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

  • Sameroom icon

    Sameroom

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

    Commercial Web / Cloud

  • Actor Messenger icon

    Actor Messenger

    Modile-first open source self-hosted messaging platform that allows to easily create your own messaging app.

    Open Source Mac Windows Linux Web / Cloud Android iPhone ... Android Tablet iPad Self-Hosted

  • Know any more alternatives to Hack Chat?

    Suggest an application to this list
  • 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

  • Fleep icon

    Fleep

    Fleep is a messenger for your teams and projects. It enables communication within and across organizations - be it your team chats...

    Freemium Mac Windows Web / Cloud Android iPhone

  • 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

  • Grape icon

    Grape

    Grape is a business communication solution with a deep service integration, that makes all the distributed data from different...

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

  • Flowdock icon

    Flowdock

    Flowdock is a beautiful group chat. You can upload files, paste blocks of text, use #hashtags to make notes or create lists and...

    Commercial Web / Cloud

  • ZeroChat icon

    ZeroChat

    An IRC-like internet chatroom hosted on ZeroNet, a distributed network. 0rc is a fully distributed website, and messages are shared...

    Open Source Mac Windows Linux Web / Cloud Self-Hosted Python ... JavaScript ZeroNet

  • Share this list of alternatives?

  • Wiggio icon

    Wiggio

    Wiggio is a completely free, online toolkit that makes it easy to work in groups. With Wiggio you can: - keep shared calendar (with...

    Free Web / Cloud

  • 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

  • SVYFT icon

    SVYFT

    SVYFT is Team Collaboration Built Around Group Chat. It's free to create unlimited public and private chat rooms. Unique to...

    Freemium 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

  • GlobalMeet icon

    GlobalMeet

    GlobalMeet is designed to make online meetings and presentations easy. Use it to connect with large groups anywhere in the world. ...

    Commercial Mac Windows Android iPhone Blackberry iPad

  • TribeScale icon

    TribeScale

    TribeScale is a startup that aims to enhance teamwork in companies through the improvement of communication, coordination, and the...

    Free Mac Windows Web / Cloud Android iPhone iPad ... Self-Hosted

  • Filevine icon

    Filevine

    Built to manage all communication in the office, and to keep cases moving forward, Filevine is a step forward in project management...

    Commercial Web / Cloud

  • Crux icon

    Crux

    Headquartered in Santa Monica, Crux was built with groups in mind in order to communicate in a more organized, easy, and efficient...

    Free Android iPhone 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

  • Dialog Messenger icon

    Dialog Messenger

    Dialog Messenger is a customized self-hosted platform usable across multi operation systems simultaneously. dialog provides SDK tools...

    Free Personal Mac Windows Linux Web / Cloud Android iPhone ... Self-Hosted

  • Jaconda icon

    Jaconda

    Jaconda is designed as an easy-to-use company chat. It offers persistent chat rooms with searchable history, file sharing, guest...

    Commercial Web / Cloud Telegram

  • Hyphen Messaging icon

    Hyphen Messaging

    Hyphen is a professional instant messenger built for modern teams and individuals who want to stay connected to the business world at...

    Free Android iPhone

  • Output Messenger icon

    Output Messenger

    Private and Secure Instant Messenger for Office designed specifically for keeping remote employees and multiple offices in sync. ...

    Commercial Mac Windows Linux Android iPhone Self-Hosted

  • 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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