head to head · open source
react vs profiler
react has 250,761 GitHub stars, 51,453 forks, 1,377 open issues and last shipped 2 days ago. profiler has 1,536 stars, 496 forks, 862 open issues and last shipped yesterday. react leads on adoption by 16,226% (250,761 vs 1,536 stars). react is written in JavaScript under MIT; profiler is written in TypeScript under MPL-2.0. react has attracted 21% as many forks as stars, profiler 32%. profiler was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (javascript, react), 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
| react | profiler | |
|---|---|---|
| GitHub stars | ★ 251K | ★ 1.5K |
| License | MIT | MPL-2.0 |
| Written in | JavaScript | TypeScript |
| Last push | 2026-10-07 | 2026-10-08 |
| Forks | ⑂ 51K | ⑂ 496 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick react if
- You weight community size — 251K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick profiler if
- You want the profiler feature set and don't need the biggest community
- You prefer the MPL-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and profiler fits your workflow better
About react
React is a JavaScript library under the MIT licence for building user interfaces, using a declarative, component based model that renders both on the web and, through React Native, on mobile.
read the full react overview →
About profiler
Firefox Profiler is an open source web application for visualizing performance profiles recorded from Firefox and other profilers, built for developers and Mozilla engineers who need to diagnose slow pages, scripts, and browser behaviour.
read the full profiler overview →
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Frequently asked questions
Is react or profiler more popular?
react has 250,761 GitHub stars and profiler has 1,536. react has the larger community by that measure.
Are react and profiler free?
Both are open source. react is licensed under MIT and profiler under MPL-2.0. Neither carries a licence fee.
What is the difference between react and profiler?
react is written in JavaScript and profiler 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, react or profiler?
Choose react if you want the larger community (250,761 stars) or its MIT licence terms. Choose profiler if its feature set, stack or MPL-2.0 licence fits better. Both are self-hostable.