• Skype icon

    Skype

    Skype is the most popular free voice-over IP and instant messaging service globally. It allows users to text, video and voice call...

    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
  • Discord icon

    Discord

    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

    • Great app that even supports video meetings
      Guest • Apr 2016 Disagree   Agree
  • 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)

  • Rocket.Chat icon

    Rocket.Chat

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

    Open Source Mac Windows Linux Android iPhone Self-Hosted

  • 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

  • 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

    • 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
  • Basecamp icon

    Basecamp

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

    Commercial Web / Cloud

  • Riot.im icon

    Riot.im

    Riot (formerly Vector) is an opensource interoperable app running on Web, iOS and Android. It is built around chat rooms, both public...

    Open Source Web / Cloud Android iPhone iPad Self-Hosted Chrome ... Safari Firefox

  • Quip icon

    Quip

    Quip is a modern word processor that enables you to create beautiful documents on any device, including the iPad, iPhone, and the...

    Commercial Mac Windows Android iPhone Android Tablet iPad

  • 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

  • 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

  • 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

  • Know any more alternatives to Slack?

    Suggest an application to this list
  • 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...

    Free Web / Cloud

  • 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

  • Zulip icon

    Zulip

    Powerful open source group chat. Features: Threaded group conversations Talk about multiple topics at once without getting lost...

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

  • 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

  • Samepage icon

    Samepage

    With Samepage, you can put all your project information on one page and collaborate with your team in real time. Samepage brings...

    Freemium Mac Windows Web / Cloud

  • Yammer icon

    Yammer

    Yammer is revolutionizing internal corporate communications by bringing together all of a company’s employees inside a private and...

    Commercial Web / Cloud Android iPhone Windows Phone

  • Share this list of alternatives?

  • 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

  • kune icon

    kune

    kune is a social network where you can communicate, collaborate and share between equals, using different web tools: documents...

    Open Source Web / Cloud

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

    Google Spaces

    Small group sharing from Google - create a space in one tap and invite people with a quick link.

    Free Web / Cloud Android iPhone

  • 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

    • Allows communicating also with email in addition to in team shared content.
      askoojaMar 2016 Disagree   Agree
  • 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

  • Ryver icon

    Ryver

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

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

  • Rabbit icon

    Rabbit

    Rabbit is about sharing your everyday. Watch your favorite shows with your friends, without being in the same room (or even the same...

    Free Personal Web / Cloud iPhone

  • 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

  • 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

  • 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

  • Hubgets icon

    Hubgets

    Collaboration app for teams of all sizes. Hubgets makes team knowledge instantly available through chat, voice and video. Fast...

    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
  • 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

  • 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

  • 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

  • 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

  • Stackfield icon

    Stackfield

    Stackfield's unique cloud platform combines e-mail, instant messaging, project management and many other useful applications of...

    Freemium Web / Cloud

Slack Comments

Slack

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).

Reply

Gridle: Achieve Kick-Ass Productivity

Comment by yashparallel
about Slack and Asana, Glip Nov 2016

You may also want to check out Gridle (https://gridle.io) 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!

Reply

#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.

Reply

Messanger 4+ 1 Helpful

Positive Comment by dementor_88
about Slack Apr 2016

Easy to use. It does not distract from work.

Reply