Alternatives to Slack for all platforms with any license

  • Skype icon


    Skype is the most popular free voice-over IP and instant messaging service globally. It allows users to text, video and voice call over the internet. Users can also call landlines and mobiles at competitive rates using Skype credit...

    Freemium Mac Windows Linux Web / Cloud Android iPhone ... Blackberry Chrome OS Windows RT Android Tablet BSD Windows Phone iPad Apple Watch Android Wear

    • Great video chat options and solid chat client for teams, we use it. OlaOct 2016 Disagree   Agree
    • No teams. Everybody has to add everybody. No search functionality. No nothing. Guest • Dec 2016 Disagree   Agree
    • Can't handle same functionality. Do not integrate with other services Guest • 9 days ago Disagree   Agree
  • Discord icon


    All-in-one voice and text chat for gamers that’s free, secure, and works on both your desktop and phone.

    Free Mac Windows Linux Web / Cloud Android iPhone

    • Good app for your personal use. Wouldn't recommend for an Enterprise setting which is what Slack is more geared towards. TheBeast2 days ago Disagree   Agree
    • Great app that even supports video meetings Guest • Apr 2016 Disagree   Agree
  • Rocket.Chat icon


    Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.

    Open Source Mac Windows Linux Android iPhone Self-Hosted

    • Does everything Slack does AND it's open source. However, it's also self-hosted. This means you have to put in the effort to set it up, but you control your own data, which is a huge advantage to your privacy - your chats and files don't sit on someone else's servers, ready for them or hackers to look at. JohnFastmanDec 2016 Disagree   Agree
  • HipChat icon


    HipChat is an instant messaging service designed for companies and teams. It has persistent chat rooms, one-to-one chat, searchable chat history, file sharing via drag & drop and clipboard, inline image previews, an API, chat over...

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

  • Glip icon


    Glip is instant messaging for teams and businesses to communicate and get work done at the same time. In Glip you work where your conversations are, so you always know what your team is doing and what needs to get done next. Video...

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

    • Has practically all of slack's features, plus tasks, calendar, etc. And the free account does not limit number of users or storage. Guest • Jun 2016 Disagree   Agree
  • icon

    Matrix is an open standard for decentralized persistent communication over IP. It can be used for decentralised group chat, WebRTC signaling, IoT-data transfer, and generally to link together fragmented silos of...

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

  • Basecamp icon


    Basecamp is a web-based project collaboration tool that allows groups of people to share files, meet deadlines, assign tasks, and centralize feedback.

    Commercial Web / Cloud Android iPhone

    No features added Add a feature
  • Let's Chat icon

    Let's Chat

    Self-hosted chat for small teams. Features and Stuff BYOS (bring your own server) Persistent messages Multiple rooms New message alerts / notifications Mentions (hey @you) Image embeds Code...

    Open Source Self-Hosted

    No features added Add a feature
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  • Google Groups icon

    Google Groups

    Google Groups is all about helping users connect with people, access information, and communicate effectively over email and on the web. Now theres a new version on the block. We didnt want to say it, but yes, its new and improved. ...

    Free Web / Cloud

    No features added Add a feature
  • eXo Platform icon

    eXo Platform

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

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

  • Campfire icon


    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 visiting a web page. It’s elegant, easy, and web-based. You don’t need to download, install, or...

    Commercial Web / Cloud iPhone

  • Samepage icon


    With Samepage, you can put all your project information on one page and collaborate with your team in real time. Samepage brings together an entire suite of project management tools, awesome communication features, and built-in...

    Freemium Mac Windows Web / Cloud

  • Share this list of alternatives?

  • Yammer icon


    Yammer is revolutionizing internal corporate communications by bringing together all of a company’s employees inside a private and secure enterprise social network. Although Yammer is as easy to use as consumer products like Facebook...

    Commercial Web / Cloud Android iPhone Windows Phone

  • Gitter icon


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

    Freemium Mac Windows Linux Web / Cloud Android iPhone

  • kune icon


    kune is a social network where you can communicate, collaborate and share between equals, using different web tools: documents, calendars, chats, wiki, messages, tasks, forums, barters. Features All the functionalities of...

    Open Source Web / Cloud

    • Like Slack, it offers group communication and collaboration, task and document management Venom88Oct 2016 Disagree   Agree
  • Kandan icon


    Open Source private chat server. Your own private Chat server in minutes, plus additional features. No credit card required. A fast, secure and stable solution based on Rails.

    Open Source Web / Cloud Self-Hosted Ruby on Rails

    No features added Add a feature
  • Ryver icon


    Ryver provides all of your team communications in one place: chats, posts, and files. Invite as many team members and guests as you need.

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

  • Hubgets icon


    Collaboration app for teams of all sizes. Hubgets makes team knowledge instantly available through chat, voice and video. Fast results, fewer interruptions, more transparency, stronger teamwork. .

    Commercial Mac Windows Web / Cloud

    • A cool tool, with sound and video integrated. Simple, colorful interface, makes me happy using it. Guest • Jan 2016 Disagree   Agree
  • Stackfield icon


    Stackfield is a Slack-alternative for chat, collaboration, calendaring and file-sharing. It enables encrypted chatting (end-to-end encryption) and is hosted in Germany.

    Freemium Web / Cloud

    • One of the best Slack alternatives. It's more private due to being hosted in Germany (and therefore under German law), and even more so because unlike Slack it offers end-to-end encrypted messaging, which means what you say to your colleagues cannot be intercepted by the host company or given away to the NSA. JohnFastmanDec 2016 Disagree   Agree
  • ScudCloud icon


    ScudCloud is a non official open-source Ubuntu desktop client for Slack.

    Open Source Linux Linux Mint Kubuntu Ubuntu

    No features added Add a feature
  • Planio icon


    Ship awesome Software! Planio is your all-in-one platform, complete with Issue Tracking, Project Management, Version Control, Help Desk, Wikis and Chat.

    Free Personal Mac Windows Linux Web / Cloud Android iPhone ... Android Tablet iPad Redmine

    No features added Add a feature
  • Sameroom icon


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

    Commercial Web / Cloud

    No features added Add a feature
  • 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

    No features added Add a feature

Slack Comments


Positive Comment by blejd
about Slack Nov 2016

The web and mobile apps are really good and focused, but desktop apps are huge memory hogs (~900MB for just 2 open teams).


Gridle: Achieve Kick-Ass Productivity

Comment by yashparallel
about Slack and Asana, Glip Nov 2016

You may also want to check out Gridle ( for all your team communication needs. It claims to bring together all forms of communication possible on internet today in one cloud based simple and beautiful environment. Takes care of your tasks, files, chats and video calls along with projects, teams and stuff!


#Slack or Telegram

Positive Comment by georgecoem
about Slack Jul 2016

I'm so accustomed to this tool but recently experienced minor issue. Had anyone have this problem with Slack when you connect to another network and Slack asks you to reboot? I've never experieced such thing with Telegram.


Messanger 4+ 1 Helpful

Positive Comment by dementor_88
about Slack Apr 2016

Easy to use. It does not distract from work.