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Discord vs Mattermost: What are the differences?
What is Discord? All-in-one voice and text chat for gamers that’s free, secure, and works on both your desktop and phone. 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.
What is Mattermost? Open-source, self-hosted, Slack alternative. Mattermost is modern communication from behind your firewall.
Discord can be classified as a tool in the "Web and Video Conferencing" category, while Mattermost is grouped under "Group Chat & Notifications".
"Fast and easy set-ups and connections" is the top reason why over 13 developers like Discord, while over 54 developers mention "Open source" as the leading cause for choosing 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.
Bitupper, Kistriver, and SuperBuddy are some of the popular companies that use Discord, whereas Mattermost is used by Uber Technologies, DuckDuckGo, and Kanteron Systems. Discord has a broader approval, being mentioned in 44 company stacks & 38 developers stacks; compared to Mattermost, which is listed in 38 company stacks and 24 developer stacks.
What is Discord?
What is Mattermost?
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Why do developers choose Discord?
Why do developers choose Mattermost?
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What are the cons of using Discord?
What are the cons of using Mattermost?
What companies use Discord?
What companies use Mattermost?
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What tools integrate with Mattermost?
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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.
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
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.

Discord combines the text and image sharing of Skype and Teamspeak 3's high speed voice connection to create this reliable software platform. With the implementation of choosing whether you wish to chat with friends in a 1-on-1 conversation, to joining a community channel and meet up with new people.
Discord provides the opportunity of letting the user join a channel with ease using nothing but a link they can paste into their browser. Discord also gives their members a wider experience being cross-platform, including Windows, Mac, Linux as well as IOS and Android mobile devices.
Discord, on top of all the above, allows the user to post images in both channels and 1-on-1 messaging, aswell as play .gif and .mp4 files.
Implemented also is the custom profile and friend system, allowing the user to add or remove friends, giving the user a vaster experience customizing their own way they wish.
Discord is an overall very well produced platform allowing a diverse experience in communication and multimedia.

Discord combines the text and image sharing of Skype and Teamspeak 3's high speed voice connection to create this reliable software platform. With the implementation of choosing whether you wish to chat with friends in a 1-on-1 conversation, to joining a community channel and meet up with new people.
Discord provides the opportunity of letting the user join a channel with ease using nothing but a link they can paste into their browser. Discord also gives their members a wider experience being cross-platform, including Windows, Mac, Linux as well as IOS and Android mobile devices.
Discord, on top of all the above, allows the user to post images in both channels and 1-on-1 messaging, aswell as play .gif and .mp4 files.
Implemented also is the custom profile and friend system, allowing the user to add or remove friends, giving the user a vaster experience customizing their own way they wish.
Discord is an overall very well produced platform allowing a diverse experience in communication and multimedia.
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.
Durch die einfache und plattformübergreifende Nutzung sowie die Möglichkeit schnell rollenbasierte Kanäle zu erstellen, bietet sich Discord hervorragend für die Kommunikation im Team sowie auch mit den Spielern an. Wir nutzen Discord statt Slack, da wir unseren Fokus im Gaming Bereich haben und Discord hier stark vertreten ist.
Discord is home to many game development communities, including AGDG (Amateur Game Development General), RGD (Reddit Game Development), and Game Dev League. When I'm working with WebGL, they are always very knowledgeable and helpful in answering my questions about physics, vectors and data structures.
We first used slack and switched to Discord later to stay near at where the community is at, while still be able to have private conversations and stay in contact. Discord offered everything we needed and used from Slack previously, plus the community-part, so it was an easy decision.
Discord is used for all the discussions with our community, and discussions between our entire staff (including Community Managers, Chat Moderators and BATs). We also use a Discord bot we developed to deploy new code to the server.