Learn how Mattermost and Rocket.Chat differ in their key features, development activity, technology stack and community adoption, so you can decide which of these team chat & messaging tools is best for you.
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Last 30 days
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Repository age
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Self-hosted
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Both Mattermost and Rocket.Chat have their unique strengths and serve similar purposes effectively. Consider your specific needs regarding popularity, growth, activity, technology, maturity, licensing and features when making your decision.
Both tools have similar popularity levels, with Mattermost having 38,841 stars and Rocket.Chat having 46,005 stars on GitHub. In terms of developer contributions, Rocket.Chat has 13,804 forks, indicating strong developer engagement.
Mattermost is growing faster, adding 337 stars in the last 30 days (+0.9%) against adding 177 stars for Rocket.Chat (+0.4%). Mattermost is the smaller project of the two, so it is closing the gap rather than extending a lead.
Both projects show recent activity, with Mattermost last updated 7 hours ago and Rocket.Chat 7 hours ago.
Both tools share common technology foundations, being built with JavaScript, CSS, Bash, Typescript, JSX, SCSS. However, they differ in their additional technology choices: Mattermost uses Golang while Rocket.Chat leverages Meteor.
Both projects started around the same time, with Mattermost beginning 11 years ago and Rocket.Chat 11 years ago.
Rocket.Chat is licensed under MIT, while Mattermost's license terms are not publicly specified.
Both tools serve similar use cases in Team Chat & Messaging, Collaborative Workspaces. However, they also have distinct specializations: Mattermost also focuses on Encrypted Communication while Rocket.Chat extends into Video Conferencing & Virtual Office.
Both Mattermost and Rocket.Chat offer self-hosting capabilities, giving you full control over your data and infrastructure.
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