Best Kalai Alternatives in 2026
Updated
20 apps from code transpilers ranked against Kalai on the same published basis.
- 1Kalai vs SWC
- 2Kalai vs Transcrypt
- 3Kalai vs Google Web Toolkit
- 4Kalai vs Babel
- 5Kalai vs ClojureScript
- 6Kalai vs Kotlin/JS
- 7Kalai vs Scala.js
- 8Kalai vs Cython
- 9Kalai vs Vala
- 10Kalai vs CoffeeScript
- 11Kalai vs Dart pub
- 12Kalai vs Mitosis
- 13Kalai vs Skulpt
- 14Kalai vs Fable
- 15Kalai vs Haxelib
- 16Kalai vs ReScript
- 17Kalai vs PureScript Registry
- 18Kalai vs J2ObjC
- 19Kalai vs Brython
- 20Kalai vs SourceMeld
Kalai alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | SWC | 7.4 | Free plan | Free | Android, API, Linux, Mac, Web, Windows |
| 2 | Transcrypt | 7.4 | Free plan | Free | Linux, Mac, self-hosted, Web, Windows |
| 3 | Google Web Toolkit | 7.3 | Free plan | Free | Browser, Linux, Mac, Web, Windows |
| 4 | Babel | 7.2 | Free plan | Free | API, Linux, Mac, Web, Windows |
| 5 | ClojureScript | 7.2 | Free plan | Free | Linux, Mac, self-hosted, Web, Windows |
| 6 | Kotlin/JS | 7.2 | Free plan | Free | Linux, Mac, Web, Windows |
| 7 | Scala.js | 7.2 | Free plan | Free | API, Linux, Mac, Web, Windows |
| 8 | Cython | 7.1 | Free plan | Free | Linux, Mac, Windows |
| 9 | Vala | 7.0 | Free plan | Free | Linux, Mac, Windows |
| 10 | CoffeeScript | 6.8 | No | — | API, Linux, Mac, Web, Windows |
| 11 | Dart pub | 6.5 | No | — | Linux, Mac, Windows |
| 12 | Mitosis | 6.4 | No | — | API, Web |
| 13 | Skulpt | 6.2 | Free plan | Free | Web |
| 14 | Fable | 6.1 | No | — | Web |
| 15 | Haxelib | 6.1 | No | — | Linux, Mac, Windows |
| 16 | ReScript | 6.1 | No | — | Web |
| 17 | PureScript Registry | 6.0 | No | — | API, Web |
| 18 | J2ObjC | 5.9 | Free plan | Free | iOS, Linux, Mac |
| 19 | Brython | 5.7 | No | — | Web |
| 20 | SourceMeld | 5.7 | Free plan | Free | API, self-hosted |
Make your app an alternative to Kalai
See the priceThe sponsored alternative slot on this page is labelled Sponsored.
Questions about Kalai alternatives
What is the best alternative to Kalai?
SWC, number 1 in code transpilers with a score of 7.4 out of 10. The others here: Transcrypt, Google Web Toolkit, Babel and 16 more.
What is the best free alternative to Kalai?
SWC is the best-ranked alternative with a free plan. 12 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on.