head to head · open source
Onlook vs Chartbrew
Onlook has 26,752 GitHub stars, 2,101 forks, 380 open issues and last shipped 24 days ago. Chartbrew has 4,059 stars, 455 forks, 5 open issues and last shipped yesterday. Onlook leads on adoption by 559% (26,752 vs 4,059 stars). Onlook is written in TypeScript under Apache-2.0; Chartbrew is written in JavaScript under a custom or non-standard licence. Onlook has attracted 8% as many forks as stars, Chartbrew 11%. Chartbrew 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
| Onlook | Chartbrew | |
|---|---|---|
| GitHub stars | ★ 27K | ★ 4.1K |
| License | Apache-2.0 | Custom / other |
| Written in | TypeScript | JavaScript |
| Last push | 2026-08-25 | 2026-09-17 |
| Forks | ⑂ 2.1K | ⑂ 455 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Onlook if
- You weight community size — 27K 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 Chartbrew if
- You want the Chartbrew feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches JavaScript
- You evaluated both and Chartbrew fits your workflow better
About Onlook
Onlook is an open source, Apache 2.0 visual editor for Next.js and TailwindCSS projects that lets designers and developers edit a running React app in the browser while the underlying code changes in real time.
read the full Onlook overview →
About Chartbrew
Chartbrew is an open source web application for building and sharing live data dashboards. It sits in the JavaScript developer tools ecosystem and connects directly to APIs, SQL databases, and NoSQL databases so users can turn query results and request responses into charts. The project provides a chart builder, editable dashboards, embeddable charts, a query and request editor, team capabilities, scheduling, and an AI assistant.
read the full Chartbrew overview →
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Frequently asked questions
Is Onlook or Chartbrew more popular?
Onlook has 26,752 GitHub stars and Chartbrew has 4,059. Onlook has the larger community by that measure.
Are Onlook and Chartbrew free?
Both are open source. Onlook is licensed under Apache-2.0, and Chartbrew has no licence declared in this registry. Both are free to self-host.
What is the difference between Onlook and Chartbrew?
Onlook is written in TypeScript and Chartbrew in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Onlook or Chartbrew?
Choose Onlook if you want the larger community (26,752 stars) or its Apache-2.0 licence terms. Choose Chartbrew if its feature set, stack or Custom / other licence fits better. Both are self-hostable.