Learn how Rocket.Chat and Zulip 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.
Last 30 days
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Last 30 days
Last commit
Repository age
Version
License
Self-hosted
Repository

Both Rocket.Chat and Zulip 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.
Rocket.Chat leads in popularity with 46,114 stars vs 25,891 stars for Zulip. The 78% higher star count indicates stronger community adoption. In terms of developer contributions, Rocket.Chat has 13,875 forks, indicating strong developer engagement.
Zulip is growing faster, adding 183 stars in the last 30 days (+0.7%) against adding 138 stars for Rocket.Chat (+0.3%). Zulip is the smaller project of the two, so it is closing the gap rather than extending a lead.
Both projects show recent activity, with Rocket.Chat last updated 15 hours ago and Zulip 3 days ago.
Both tools share common technology foundations, being built with JavaScript, CSS, Bash, Typescript. However, they differ in their additional technology choices: Rocket.Chat uses JSX, SCSS, Meteor while Zulip leverages Python, Ruby.
Both projects started around the same time, with Rocket.Chat beginning 11 years ago and Zulip 11 years ago.
Rocket.Chat uses the MIT license, which is more permissive than Zulip's Apache-2.0 license, potentially offering greater flexibility for commercial use and integration.
Both tools serve similar use cases in Team Chat & Messaging. However, they also have distinct specializations: Rocket.Chat also focuses on Collaborative Workspaces, Video Conferencing & Virtual Office.
Both Rocket.Chat and Zulip offer self-hosting capabilities, giving you full control over your data and infrastructure.
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