head to head · open source
univer vs free4chat
univer has 14,417 GitHub stars, 1,303 forks, 151 open issues and last shipped today. free4chat has 1,185 stars, 166 forks, 1 open issues and last shipped today. univer leads on adoption by 1,117% (14,417 vs 1,185 stars). univer is written in TypeScript under Apache-2.0; free4chat is written in TypeScript under MIT. univer has attracted 9% as many forks as stars, free4chat 14%. free4chat was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (collaboration), 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
| univer | free4chat | |
|---|---|---|
| GitHub stars | ★ 14K | ★ 1.2K |
| License | Apache-2.0 | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-20 | 2026-09-20 |
| Forks | ⑂ 1.3K | ⑂ 166 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick univer if
- You weight community size — 14K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick free4chat if
- You want the free4chat feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and free4chat fits your workflow better
About univer
Univer is an open source, full stack office SDK for building spreadsheet, document and presentation interfaces inside your own product. Rather than shipping an end user office suite, it gives developers the primitives — a Canvas based renderer, a formula engine, a plugin architecture and a single Facade API — to embed spreadsheet and document editing into a web application or run the same logic headlessly on Node.js.
read the full univer overview →
About free4chat
Free4Chat is an MIT licensed, TypeScript system for temporary capability access and collaboration that brings humans and independently running AI agents together in short lived Rooms to exchange realtime context, media, focused Tasks, and artifacts without accounts or a permanent workspace.
read the full free4chat overview →
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Frequently asked questions
Is univer or free4chat more popular?
univer has 14,417 GitHub stars and free4chat has 1,185. univer has the larger community by that measure.
Are univer and free4chat free?
Both are open source. univer is licensed under Apache-2.0 and free4chat under MIT. Neither carries a licence fee.
What is the difference between univer and free4chat?
univer is written in TypeScript and free4chat 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, univer or free4chat?
Choose univer if you want the larger community (14,417 stars) or its Apache-2.0 licence terms. Choose free4chat if its feature set, stack or MIT licence fits better. Both are self-hostable.