head to head · open source
Rocket.Chat vs Mezon
Rocket.Chat has 46,361 GitHub stars, 14,076 forks, 4,023 open issues and last shipped yesterday. Mezon has 2,015 stars, 62 forks, 85 open issues and last shipped yesterday. Rocket.Chat leads on adoption by 2,201% (46,361 vs 2,015 stars). Rocket.Chat is written in TypeScript under a custom or non-standard licence; Mezon is written in TypeScript under a licence not recorded in this registry. Rocket.Chat has attracted 30% as many forks as stars, Mezon 3%. Rocket.Chat was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (chat), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Rocket.Chat | Mezon | |
|---|---|---|
| GitHub stars | ★ 46K | ★ 2.0K |
| License | Custom / other | Custom / other |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 14K | ⑂ 62 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Rocket.Chat if
- You weight community size — 46K stars and counting
- You want the Custom / other license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick Mezon if
- You want the Mezon feature set and don't need the biggest community
- Your stack matches TypeScript
- You evaluated both and Mezon fits your workflow better
About Rocket.Chat
The ultimate secure open source solution for team communications Rocket.Chat is an open source, secure, fully customizable communications platform developed in TypeScript for organizations with high standards of data protection. We are the ultimate solution for team communications, enabling real time conversations between colleagues, with other companies, and with your customers or citizens, regardless of how they connect with you. The result is an increase in productivity and user satisfaction rates. Every day, tens of millions of users in over 150 countries and in organizations such as Deutsche Bahn, The US…
read the full Rocket.Chat overview →
About Mezon
Mezon The Live, Work, and Play Platform – High performance · Lightweight · Real time. Mezon Bug Report Community Mezon Bug Report Community High performance, lightweight real time communication technology for communities. Mezon is a Live, Work, and Play platform. It’s perfect for gaming and chilling with friends, or even building a global community. Customize your own space to talk, play, and hang out. Mezon also delivers enterprise grade performance with sub millisecond response times and support for millions of concurrent connections. That performance comes from owning the hot path end to end: high performance…
read the full Mezon overview →
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Frequently asked questions
Is Rocket.Chat or Mezon more popular?
Rocket.Chat has 46,361 GitHub stars and Mezon has 2,015. Rocket.Chat has the larger community by that measure.
Are Rocket.Chat and Mezon free?
Neither Rocket.Chat nor Mezon declares a licence in this registry, so check each project's own repository before relying on either for a commercial use. Both are free to self-host.
What is the difference between Rocket.Chat and Mezon?
Rocket.Chat is written in TypeScript and Mezon in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Rocket.Chat or Mezon?
Choose Rocket.Chat if you want the larger community (46,361 stars) or its Custom / other licence terms. Choose Mezon if its feature set, stack or Custom / other licence fits better. Both are self-hostable.