Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · Code Transpilers

Cython vs TeaVM

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Cython #4 in Code Transpilers 8.7/10 Free plan Free plan✓ 2 of 4 features Visit Cython
TeaVM #5 in Code Transpilers 8.6/10 Free plan Free plan✓ 2 of 4 features Visit TeaVM

Cython leads on 0 checks, TeaVM 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 scoreCython · 8.7/10
  • Free planboth

Cython scores higher on our rubric for code transpilers: 8.7 against 8.6 out of 10; our editors rank them #4 and #5.

Cython is the better fit for python projects needing C or C++ extensions. TeaVM is the better fit for java teams targeting JavaScript or WebAssembly.

  • Cython fits best

    Python projects needing C or C++ extensions

  • TeaVM fits best

    Java teams targeting JavaScript or WebAssembly

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Cython 8.7/10 Visit ↗ TeaVM 8.6/10 Visit ↗
At a glance
Editor score 8.7 8.6
Ranking #4 in Code Transpilers #5 in Code Transpilers
Best for Python projects needing C or C++ extensions Java teams targeting JavaScript or WebAssembly
Pricing model Free Free
Starting price Free plan Free plan
Free plan ✓ ✓
Free trial — —
Deployment Self-hosted Self-hosted
Support Community, Docs Email, Docs
Integrations 10 integrations 7 integrations
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Cython 2/4 · TeaVM 2/4
Syntax-version conversion — Not checked yet
Intermediate output — 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
  • Translates Python and Cython source into C or C++ code
  • Supports optional static types and C/C++ interoperability
  • Works with Jupyter and build tools including setuptools and Meson
  • Compiles Java bytecode to JavaScript and Java or Kotlin to WebAssembly GC
  • Maven and Gradle integration with JavaScript interoperability
  • Includes source maps, debugging, development servers, and browser testing
Cons
  • Requires a native build step to create importable extension modules
  • Focused on Python-to-C/C++ compilation rather than general-purpose conversion
  • Community and documentation are the listed support channels
  • Works within TeaVM’s supported Java API constraints
  • Focused on new web applications and selected code reuse, not every Java workload
  • Requires self-hosted deployment
Our verdict

Cython is an open-source programming language and static compiler for Python developers building compiled extension modules or connecting Python code to C and C++ libraries. It translates Python or Cython source into C or C++ code, which…

Read the review →

TeaVM is an open-source ahead-of-time compiler for Java, Kotlin, and Scala developers who want to build web front ends or reuse selected backend code in browser applications. It compiles Java bytecode to JavaScript, supports Java and…

Read the review →
  1. CythonCode Transpilers 8.7Free plan
  2. TeaVMCode Transpilers 8.6Free plan

Strengths and trade-offs

  • Cython — where it wins

    • Translates Python and Cython source into C or C++ code
    • Supports optional static types and C/C++ interoperability
    • Works with Jupyter and build tools including setuptools and Meson

    Where it doesn't

    • Requires a native build step to create importable extension modules
    • Focused on Python-to-C/C++ compilation rather than general-purpose conversion
    • Community and documentation are the listed support channels

  • TeaVM — where it wins

    • Compiles Java bytecode to JavaScript and Java or Kotlin to WebAssembly GC
    • Maven and Gradle integration with JavaScript interoperability
    • Includes source maps, debugging, development servers, and browser testing

    Where it doesn't

    • Works within TeaVM’s supported Java API constraints
    • Focused on new web applications and selected code reuse, not every Java workload
    • Requires self-hosted deployment
  • Cython8.7/10 · Free plan

    An open-source compiler for Python projects that need native C or C++ extensions.

    Visit CythonFull verdict →
  • TeaVM8.6/10 · Free plan

    A free, open-source compiler for Java teams building browser applications or native targets.

    Visit TeaVMFull 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