Slack vs. HipChat vs. Mattermost

Slack vs HipChat vs Mattermost: What are the differences?

Slack is the undisputed champion of the workplace group chat world. But HipChat and Mattermost have their own fans, as well. HipChat is frequently called “developer-friendly” and “IRC-like.” Mattermost is open source and deployed on-premise, differentiating it from its competitors.

Hacker News, Reddit, Stack Overflow Stats

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GitHub Stats

No public GitHub repository stats available
No public GitHub repository stats available


What is Slack?

Imagine all your team communication in one place, instantly searchable, available wherever you go. That’s Slack. All your messages. All your files. And everything from Twitter, Dropbox, Google Docs, Asana, Trello, GitHub and dozens of other services. All together.

What is HipChat?

HipChat is a hosted private chat service for your company or team. Invite colleagues to share ideas and files in persistent group chat rooms. Get your team off AIM, Google Talk, and Skype — HipChat was built for business.

What is Mattermost?

Mattermost is modern communication from behind your firewall.

Want advice about which of these to choose?Ask the StackShare community!


Why do developers choose Slack?
Why do you like Slack?

Why do developers choose HipChat?
Why do you like HipChat?

Why do developers choose Mattermost?
Why do you like Mattermost?


What are the cons of using Slack?
Downsides of Slack?

What are the cons of using HipChat?
No Cons submitted yet for HipChat
Downsides of HipChat?

What are the cons of using Mattermost?
Downsides of Mattermost?

Why do developers choose Slack vs HipChat vs Mattermost?

  • Slack users love that it’s easy to integrate with; it’s fun and easy to use, so even non-developers love using it. Fans also cite its cross-platform interface as a pro.
  • HipChat fans stress that the tool is developer-friendly and integrates well with a lot of developer tools. Its IRC-like interface is familiar to many programmers.
  • Mattermost is the only open source tool on this list. It’s also deployed on-premise, behind your firewall. Fans call it fast, easy to use, and professional.


How much does Slack cost?
Slack Pricing
How much does HipChat cost?
HipChat Pricing
How much does Mattermost cost?


What companies use Slack?
5537 companies on StackShare use Slack
What companies use HipChat?
404 companies on StackShare use HipChat
What companies use Mattermost?
49 companies on StackShare use Mattermost


What tools integrate with Slack?
231 tools on StackShare integrate with Slack
What tools integrate with HipChat?
122 tools on StackShare integrate with HipChat
What tools integrate with Mattermost?
13 tools on StackShare integrate with Mattermost

What are some alternatives to Slack, HipChat, and Mattermost?

  • Gitter - Messaging for people who make software. Integrated with your team, projects and your code.
  • RocketChat - Open source slack alternative
  • Zulip - Powerful open source team chat
  • Microsoft Teams - Chat-based workspace in Office 365

See all alternatives to Slack

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Related Stack Decisions
Head of Product at Zulip · | 3 upvotes · 857 views

I use Zulip instead of Slack, Mattermost, or RocketChat because of its first class threading. One week after switching to Gmail (in 2004) I realized I was never (willingly) going to use an unthreaded email product again. I had that same experience the first time I saw Zulip.

Zulip is also fully open-source, with a well-maintained (e.g. 90+% test coverage, fully static python), easily extensible code-base. In many companies, your communication platform (chat or email) is the center of the workplace -- no one asks for a chat integration into their calendar, they ask for a calendar integration into their chat. A fully open-source codebase means you can customize Zulip to your needs, and are never at the whim of a corporate maintainer who can't or won't fix simple bugs, or who will charge you tens of thousands of dollars for making minor customizations.

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I use Zulip because I love how it lets me focus on my work, and doesn't need me to be constantly online to be able to participate in conversations that matter to me. Zulip's topics make it super easy to get an overview of all the conversations that happened while I was away, and pick and choose the conversations that I want to catch-up with. Slack 's threads seem like an after-thought and aren't effective for catching-up at all!

I also love the Zulip community, and the care and effort put in by the members to make it a friendly and welcoming community to new developers, and to make the contribution experience pleasant for all the contributors.

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Vishnu KS
Vishnu KS
Software Engineer at Zulip · | 5 upvotes · 977 views

Zulip has easily the best threading model among all the chat applications and I prefer it over Slack, Mattermost, RocketChat, Hipchat, Discord etc. Each and every conversation is a seperate thread and has a topic. This model makes it extremely easier to catch up and participate in conversations. Once you get used to the threading model of Zulip its hard to tolerate threading model like Slack which is really inefficient and time wasting.

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Interest Over Time