head to head · open source
Buzz vs univer
Buzz has 36,686 GitHub stars, 4,869 forks, 3,556 open issues and last shipped yesterday. univer has 22,854 stars, 1,920 forks, 151 open issues and last shipped yesterday. Buzz leads on adoption by 61% (36,686 vs 22,854 stars). Buzz is written in Rust under Apache-2.0; univer is written in TypeScript under Apache-2.0. Buzz has attracted 13% as many forks as stars, univer 8%. Buzz was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| Buzz | univer | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 23K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Rust | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 4.9K | ⑂ 1.9K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Buzz if
- You weight community size — 37K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick univer if
- You want the univer feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and univer fits your workflow better
About Buzz
Buzz 🐝 A workspace where humans and agents build together, on a relay you own. Vision · Sovereign · Forge · Agents · Architecture · Releasing · Apache 2.0 People and agents building together in the same room. What is this, really? Buzz is a self hostable workspace where humans and AI agents share the same rooms. A Buzz community is the workspace a user reaches by URL. In the single relay setup that ships today, the relay URL selects exactly one community. A hosted operator can serve many communities behind many domains or subdomains, but the client facing rule stays the same: the URL is authoritative for the…
About univer
A full stack, isomorphic office SDK for building spreadsheets, documents, and presentations. Build embeddable productivity experiences with a plugin architecture, Canvas based rendering, a formula engine, and one Facade API that works in the browser and on Node.js. English 简体中文 繁體中文 日本語 한국어 Español 📖 Documentation ✨ Showcase 📘 API Reference 📝 Blog ✨ What is Univer? Univer is an open source SDK for creating office applications inside your own product. It gives you the building blocks for spreadsheet, document, and presentation experiences without forcing you into a hosted app or a fixed UI. Use Univer when you…
read the full univer overview →
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Frequently asked questions
Is Buzz or univer more popular?
Buzz has 36,686 GitHub stars and univer has 22,854. Buzz has the larger community by that measure.
Are Buzz and univer free?
Both are open source. Buzz is licensed under Apache-2.0 and univer under Apache-2.0. Neither carries a licence fee.
What is the difference between Buzz and univer?
Buzz is written in Rust and univer 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, Buzz or univer?
Choose Buzz if you want the larger community (36,686 stars) or its Apache-2.0 licence terms. Choose univer if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.