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Gitter
Gitter

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Mattermost
Mattermost

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Gitter vs Mattermost: What are the differences?

Gitter: Messaging for people who make software. Integrated with your team, projects and your code. Free chat rooms for your public repositories A bit like IRC only smarter. Chats for private repositories as well as organisations.; Mattermost: Open-source, self-hosted, Slack alternative. Mattermost is modern communication from behind your firewall.

Gitter and Mattermost can be categorized as "Group Chat & Notifications" tools.

Some of the features offered by Gitter are:

  • Know who's seen any message
  • Edit messages after you've sent them
  • Full emoji support

On the other hand, Mattermost provides the following key features:

  • All your team communication in one place, searchable and accessible anywhere
  • Slack-compatible, not Slack-limited. Imports Slack channels, users and themes. Offers Slack-compatible webhooks and integrations including Hubot, Jenkins, GitLab and others
  • Self-host ready with System Console and IT admin tools for managing dozens of team sites. Installs with Linux binary, plus Docker, Heroku, AWS, Azure and Cloud Foundry options

"Github integration" is the primary reason why developers consider Gitter over the competitors, whereas "Open source" was stated as the key factor in picking Mattermost.

Mattermost is an open source tool with 14.9K GitHub stars and 3.04K GitHub forks. Here's a link to Mattermost's open source repository on GitHub.

According to the StackShare community, Gitter has a broader approval, being mentioned in 25 company stacks & 41 developers stacks; compared to Mattermost, which is listed in 38 company stacks and 24 developer stacks.

- No public GitHub repository available -

What is Gitter?

Free chat rooms for your public repositories. A bit like IRC only smarter. Chats for private repositories as well as organisations.

What is Mattermost?

Mattermost is modern communication from behind your firewall.
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    What are some alternatives to Gitter and Mattermost?
    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.
    Discord
    Discord is a modern free voice & text chat app for groups of gamers. Our resilient Erlang backend running on the cloud has built in DDoS protection with automatic server failover.
    GitHub
    GitHub is the best place to share code with friends, co-workers, classmates, and complete strangers. Over three million people use GitHub to build amazing things together.
    Riot
    Riot brings custom tags to all browsers. Think React + Polymer but with enjoyable syntax and a small learning curve.
    Spectrum
    The community platform for the future.
    See all alternatives
    Decisions about Gitter and Mattermost
    rishig
    rishig
    Head of Product at Zulip · | 4 upvotes · 25.2K views
    atZulipZulip
    RocketChat
    RocketChat
    Mattermost
    Mattermost
    Slack
    Slack

    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.

    See more
    Aghmat Abrahams
    Aghmat Abrahams
    Junior Data Engineer at Impact Radius · | 5 upvotes · 18.2K views
    Slack
    Slack
    OpsGenie
    OpsGenie
    GitHub
    GitHub
    Jira
    Jira
    Mattermost
    Mattermost

    Slack is the industry standard for managed instant messaging (IM). A good alternative would be to self (or cloud) host an open source IM such as Mattermost but as always it would be a good idea to do a cost benefit analysis between the solutions.

    Some of the main things to consider:

    • Having a good SDK for plugin creation
    • Having good integrations with existing tools ( JIRA , GitHub , OpsGenie , etc.)
    • Cost
    • Maintenance and administration
    • Covers all your businesses use cases
    See more
    Mark Nelissen
    Mark Nelissen
    CTO at Gemsotec bvba · | 5 upvotes · 26.6K views
    Mattermost
    Mattermost
    Skype
    Skype
    Stride
    Stride
    HipChat
    HipChat
    Slack
    Slack

    I use Slack because it offers the best experience, even on the free tier (which we're still using). As a comparison, I have had in depth experience with HipChat, Stride, Skype, Google Chat (the new service), Google Hangouts (the old service). For self hosted, Mattermost is open source and claims to support most Slack integrations, but I have not extensively investigated this claim.

    See more
    GitHub
    GitHub
    Google Drive
    Google Drive
    Zulip
    Zulip
    Gitter
    Gitter
    #OpenSource
    #User-Friendly
    #Projects
    #Teams
    #Events

    We run a major community project named as @Donut which is an #OpenSource social platform which allows communities to set up their own social environment and @slack platform drives us through the best experience of community interaction. Though we have been using some Open Source Interacting platforms like Gitter and Zulip but the fact that Slack exists and is such an essential tool, it’s really helped us with scaling and still feeling connected to one another across remote places with various teams with appropriate features in it.

    The #User-Friendly Slack brings all the organised conversations at one place giving a prospectus to feel the better user experience on desktop.

    Followings its pros:

    • Allow creating of various channels which can be best suited to organised #projects, #teams and #events.
    • Allow multiple tools and integrations such as Google Drive and GitHub
    • Video Conferencing addition helps teams to organise meetings.
    • No limit for addition of users and its free.
    • Allow threads to keep side conversations from derailing the topic or project at hand.

    The most crucial thing it supports the best security and protection with 2 factors authentication.

    See more
    Slack
    Slack
    Spectrum
    Spectrum
    Discord
    Discord
    Gitter
    Gitter

    From a StackShare Community member: “We’re about to start a chat group for our open source project (over 5K stars on GitHub) so we can let our community collaborate more closely. The obvious choice would be Slack (k8s and a ton of major projects use it), but we’ve seen Gitter (webpack uses it) for a lot of open source projects, Discord (Vue.js moved to them), and as of late I’m seeing Spectrum more and more often. Does anyone have experience with these or other alternatives? Is it even worth assessing all these options, or should we just go with Slack? Some things that are important to us: free, all the regular integrations (GitHub, Heroku, etc), mobile & desktop apps, and open source is of course a plus."

    See more
    Interest over time
    Reviews of Gitter and Mattermost
    No reviews found
    How developers use Gitter and Mattermost
    Avatar of FAELIX
    FAELIX uses MattermostMattermost

    It is no secret that we use Mattermost at Faelix — after all, it is a product we already support to be able to offer it to our customers. And like many network operators we use Oxidized to track and log changes to our routers and switches, even when those changes are made by automation tools.

    As part of our move to using more ChatOps within the business I wanted to get visibility of network changes within our network operations channel in Mattermost. A quick and dirty script achieved this.

    Avatar of datapile
    datapile uses GitterGitter

    We haven't found a better way to communicate directly with the core contributors and developers for many open source projects we utilize on GitHub (Scala, Scala-js, Sinatra, Apache top-level projects, just to name a few).

    It is a solid piece of software that appeals to us who have used Slack in the past, and the tight integration with a single GitHub repository or organization for each Gitter room just makes sense in our eyes.

    Avatar of Mick Dekkers
    Mick Dekkers uses GitterGitter

    Many GitHub communities are on Gitter. It's a great place to ask and answer questions related to open-source frameworks and libraries.

    Avatar of Juliën Hanssens
    Juliën Hanssens uses GitterGitter

    Using Gitter for open source talks and directly communicating with contributors.

    Avatar of Scott Miller
    Scott Miller uses GitterGitter

    My favorite chat tool for open source

    Avatar of Riderman De Sousa Barbosa
    Riderman De Sousa Barbosa uses GitterGitter

    Communication with the team.

    How much does Gitter cost?
    How much does Mattermost cost?
    Pricing unavailable