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Head-to-head · Code Transpilers

Kotlin/JS vs ClojureScript

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Kotlin/JS #3 in Code Transpilers 8.8/10 Free plan Free plan✓ 3 of 4 features Visit Kotlin/JS
ClojureScript #7 in Code Transpilers 8.4/10 Open source ✓ 2 of 4 features Visit ClojureScript

Kotlin/JS leads on 0 checks, ClojureScript on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreKotlin/JS · 8.8/10
  • Free planonly Kotlin/JS
  • Most featuresKotlin/JS · 3 of 4

Kotlin/JS scores higher on our rubric for code transpilers: 8.8 against 8.4 out of 10; our editors rank them #3 and #7.

Kotlin/JS is the better fit for kotlin teams targeting browsers or Node.js. ClojureScript is the better fit for clojure teams targeting browser and Node.js.

  • Kotlin/JS fits best

    Kotlin teams targeting browsers or Node.js

  • ClojureScript fits best

    Clojure teams targeting browser and Node.js

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Side by side

Feature Kotlin/JS 8.8/10 Visit ↗ ClojureScript 8.4/10 Visit ↗
At a glance
Editor score 8.8 8.4
Ranking #3 in Code Transpilers #7 in Code Transpilers
Best for Kotlin teams targeting browsers or Node.js Clojure teams targeting browser and Node.js
Pricing model Free Free
Starting price Free plan Open source
Free plan ✓ (best) Not checked yet
Free trial — —
Deployment Self-hosted Self-hosted
Platforms Web, Windows, macOS, Linux Web, Windows, macOS, Linux
Support Community, Docs Docs, Community
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Kotlin/JS 3/4 · ClojureScript 2/4
Syntax-version conversion ✓ (best) Not checked yet
Intermediate output ✓ (best) Not checked yet
CLI access ✓ ✓
API access Not checked yet ✓ (best)
Specs
Source languages Not checked yet Not checked yet
Target languages Not checked yet Not checked yet
Conversion mode Source-to-source Source-to-source
Our review
Pros
  • Compiles to ES5 and ES2015 for browser and Node.js targets
  • Supports npm packages, webpack, and JavaScript module interoperability
  • Generates TypeScript declarations and offers production minification
  • Compiles Clojure to JavaScript with Google Closure-compatible output and optimization.
  • Supports browser, Node.js, Web Worker, and bundle targets.
  • Includes browser and Node.js REPLs, npm dependencies, macros, and source maps.
Cons
  • Requires Kotlin code and compatible dependencies as input
  • Projects are configured through the Kotlin Multiplatform Gradle plugin
  • Support channels are community resources and documentation
  • The toolchain is centered on Clojure rather than multiple source languages.
  • Its feature set may be more than needed for projects that only require JavaScript.
  • Support channels are documentation and community.
Our verdict

Kotlin/JS is a source-to-source compiler and development toolchain for building browser and Node.js applications with Kotlin. It transpiles Kotlin code, the standard library, and compatible dependencies into JavaScript, with ES5 and ES2015…

Read the review →

ClojureScript is an open-source compiler and programming language for building JavaScript applications from Clojure code. It is aimed at developers and teams who want to use Clojure’s functional language features for browser or…

Read the review →
  1. Kotlin/JSCode Transpilers 8.8Free plan
  2. ClojureScriptCode Transpilers 8.4Open source

Strengths and trade-offs

  • Kotlin/JS — where it wins

    • Compiles to ES5 and ES2015 for browser and Node.js targets
    • Supports npm packages, webpack, and JavaScript module interoperability
    • Generates TypeScript declarations and offers production minification

    Where it doesn't

    • Requires Kotlin code and compatible dependencies as input
    • Projects are configured through the Kotlin Multiplatform Gradle plugin
    • Support channels are community resources and documentation

  • ClojureScript — where it wins

    • Compiles Clojure to JavaScript with Google Closure-compatible output and optimization.
    • Supports browser, Node.js, Web Worker, and bundle targets.
    • Includes browser and Node.js REPLs, npm dependencies, macros, and source maps.

    Where it doesn't

    • The toolchain is centered on Clojure rather than multiple source languages.
    • Its feature set may be more than needed for projects that only require JavaScript.
    • Support channels are documentation and community.

More comparisons

All code transpilers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update