Best Code Transpilers in 2026
Updated
In short: SWC is ranked #1 of 28 as of 3 October 2026, ahead of Transcrypt and Google Web Toolkit. The best-ranked option with a free plan is Transcrypt.
Code transpilers translate code between source and target languages or syntax versions, supporting development across different environments. Compared on source languages, target languages, conversion mode, and syntax-version conversion, the entries also vary in API and CLI access and intermediate output. Free-plan availability and paid-from pricing provide further points of comparison. The ranking begins with SWC, Babel, and Kotlin/JS, followed by Cython and Google Web Toolkit. Check which languages and conversion paths you need, then weigh the listed access methods and output options against how you work.
28 code transpilers ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
#1 SWC Top pick · 7.4 Free plan · Free
#2 Transcrypt Runner-up · 7.4 Free plan · Free
#3 Google Web Toolkit Also great · 7.3 Free plan · Free- Free plan AndroidapiLinuxmacOSWebWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatformsFree About SWCVisit site - Free plan LinuxmacOSself-hostedWebWindows
- Free plan
- Yes
- Syntax-version conversion
- No
- Intermediate output
- No
RecognisedDocumentedFree planPlatforms - Free plan extensionLinuxmacOSWebWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Free plan apiLinuxmacOSWebWindows
- Free plan
- Yes
- Syntax-version conversion
- Yes
- Intermediate output
- Yes
RecognisedDocumentedFree planPlatforms - Free plan LinuxmacOSself-hostedWebWindowsRecognisedDocumentedFree planPlatforms
- Free plan LinuxmacOSWebWindows
- Free plan
- Yes
- Syntax-version conversion
- Yes
- Intermediate output
- Yes
RecognisedDocumentedFree planPlatforms - Free plan LinuxmacOSWindows
- Free plan
- Yes
- Syntax-version conversion
- No
- Intermediate output
- No
RecognisedDocumentedFree planPlatforms - Free plan LinuxmacOSWindows
- Intermediate output
- Yes
RecognisedDocumentedFree planPlatformsFree About ValaVisit site - apiLinuxmacOSWebWindows
- Syntax-version conversion
- Yes
- Intermediate output
- Yes
RecognisedDocumentedFree planPlatforms - LinuxmacOSWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - LinuxmacOSWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - macOSLinux
- Free plan
- Yes
- Source languages
- 1 languages
- Target languages
- 1 languages
- Syntax-version conversion
- No
- Intermediate output
- No
RecognisedDocumentedFree planPlatforms - Web
- Syntax-version conversion
- No
- Intermediate output
- Yes
RecognisedDocumentedFree planPlatforms - apiWeb
- Free plan
- Yes
- Syntax-version conversion
- No
- Intermediate output
- Yes
RecognisedDocumentedFree planPlatforms -
- Free plan
- Yes
- Source languages
- 8 languages
- Target languages
- 8 languages
- Syntax-version conversion
- No
- Intermediate output
- No
RecognisedDocumentedFree planPlatforms - Web
- Syntax-version conversion
- No
- Intermediate output
- No
RecognisedDocumentedFree planPlatforms - Web
- Syntax-version conversion
- Yes
- Intermediate output
- Yes
RecognisedDocumentedFree planPlatforms -
- Target languages
- 3 languages
- Syntax-version conversion
- No
- Intermediate output
- No
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms -
- Syntax-version conversion
- No
- Intermediate output
- No
RecognisedDocumentedFree planPlatforms -
- Source languages
- 1 languages
- Target languages
- 7 languages
RecognisedDocumentedFree planPlatforms -
- Intermediate output
- Yes
RecognisedDocumentedFree planPlatforms -
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which code transpiler is ranked first on Everything Xiaomi?
SWC is ranked #1 of 28 with a score of 7.4. Transcrypt is second and Google Web Toolkit third.
How many of these have a free plan?
8 of the 25 on this page publish a free plan on their own pricing pages.
How is this list ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on. Paid placements never change a rank.