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Head-to-head · Code Transpilers

Google Web Toolkit vs ClojureScript

  • Updated Oct 2026
  • Both researched from official sources
  • 3 checks side by side
Higher score Google Web Toolkit #6 in Code Transpilers 8.5/10 Free plan Free plan✓ 2 of 4 features Visit GWT
ClojureScript #7 in Code Transpilers 8.4/10 Open source ✓ 2 of 4 features Visit ClojureScript

Google Web Toolkit leads on 0 checks, ClojureScript on 0, and 3 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreGoogle Web Toolkit · 8.5/10
  • Free planonly Google Web Toolkit

Google Web Toolkit scores higher on our rubric for code transpilers: 8.5 against 8.4 out of 10; our editors rank them #6 and #7.

Google Web Toolkit is the better fit for java teams building browser applications. ClojureScript is the better fit for clojure teams targeting browser and Node.js.

  • Google Web Toolkit fits best

    Java teams building browser applications

  • ClojureScript fits best

    Clojure teams targeting browser and Node.js

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Side by side

Feature Google Web Toolkit 8.5/10 Visit ↗ ClojureScript 8.4/10 Visit ↗
At a glance
Editor score 8.5 8.4
Ranking #6 in Code Transpilers #7 in Code Transpilers
Best for Java teams building browser applications 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 Google Web Toolkit 2/4 · ClojureScript 2/4
Syntax-version conversion Not checked yet Not checked yet
Intermediate output Not checked yet Not checked yet
CLI access ✓ ✓
API access ✓ ✓
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 client-side Java into optimized JavaScript
  • Includes Java APIs, UI widgets and JsInterop
  • Offers code splitting, debugging modes and JUnit testing
  • 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 Java development for client-side application code
  • Uses a self-hosted SDK rather than a hosted service
  • Support is centered on 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

Google Web Toolkit is an open-source toolkit for building browser-based applications with client-side Java. Teams write application code in Java and compile it into JavaScript for web browsers. Its intended audience is Java teams that want…

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. Google Web ToolkitCode Transpilers 8.5Free plan
  2. ClojureScriptCode Transpilers 8.4Open source

Strengths and trade-offs

  • Google Web Toolkit — where it wins

    • Compiles client-side Java into optimized JavaScript
    • Includes Java APIs, UI widgets and JsInterop
    • Offers code splitting, debugging modes and JUnit testing

    Where it doesn't

    • Requires Java development for client-side application code
    • Uses a self-hosted SDK rather than a hosted service
    • Support is centered on 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.
  • Google Web Toolkit8.5/10 · Free plan

    A Java-based route to browser applications, with compilation, widgets and testing tools.

    Visit GWTFull verdict →
  • ClojureScript8.4/10 · Open source

    An open-source Clojure-to-JavaScript compiler with browser and Node.js targets.

    Visit ClojureScriptFull verdict →

More comparisons

All code transpilers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update