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

Brython

Free#17 of 28 in Code Transpilers

Brython: A browser-based Python 3 option for developers building client-side web applications. Ranked #17 of 28 in Code Transpilers by our editors (7.4/10); pricing: Open source; best for python developers running code in the browser.

7.4/10Editor score
Visit Brython
Brython7.4 Visit Brython

At a glance

  • Editor score
    7.4 / 10
  • Pricing
    Open source
  • Best for
    Python developers running code in the browser
  • Paid from
    Free
  • Intermediate output
    Yes
  • Conversion mode
    Both
  • Facts checked
    22 Sep 2026
Brython screenshot

  • Where it wins

    • Runs Python 3 in the browser with DOM and event interfaces
    • Interoperates with JavaScript objects, modules, and libraries
    • Includes code generation, browser modules, and CLI package commands

  • Where it doesn't

    • Focused on client-side browser applications, not general-purpose transpilation
    • Browser DOM and event programming may not suit projects outside the web
    • Community and documentation are the listed support channels

Our verdict on Brython

Brython brings Python 3 into the browser for developers who want to write client-side web application code in Python. Its scripts can be included in HTML pages, with Python placed in text/python script tags. The project is open source and supports browser execution as well as local installation, making it relevant to individual developers and teams that want Python syntax alongside browser APIs. Its focus is specific: it is for browser-side programming rather than a general-purpose code conversion workflow.

The browser interfaces are central to the choice. Brython exposes document and window interfaces for working with the DOM, along with browser event binding and handling. It also interoperates with JavaScript objects and modules, including JavaScript libraries. That combination can fit applications where Python needs to interact directly with page elements or existing JavaScript code. Bundled browser-oriented standard-library modules and Ajax imports and browser storage-related modules add browser-specific building blocks. Teams whose applications depend on browser APIs and JavaScript can consider it; projects that need a broader language-conversion tool should look elsewhere.

Brython includes Python-to-JavaScript code generation and can generate a Python AST as a JavaScript object, so its scope includes more than running scripts in the page. CLI commands support local installation, updates, and package tasks. It can be used through hosted scripts or installed locally with pip, and is self-hosted. Support is through community resources and documentation. The published product information identifies it as open source, without specifying paid tiers. Choose Brython when browser execution, DOM access, and Python-JavaScript interoperability are the core requirements; it is a less natural fit when the priority is a wide range of source-to-target language conversions or a vendor-supported paid service.

Your product? Our editors can test Brython in depth and publish a review, labelled as paid · from $149/mo →

Brython pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.
See plans on brython.info

Brython fact sheet

Free planNot verified
Paid fromFree
Source languagesNot verified
Target languagesNot verified
Syntax-version conversionNo
Intermediate outputYes
CLI accessYes
API accessYes
Conversion modeBoth
DeploymentSelf-hosted
PlatformsWeb
SupportCommunity, Docs
Built forSolo, Small business, Mid-market, Enterprise (editorial estimate)
Integrations1 integrations: JavaScript libraries
PricingOpen source
Websitebrython.info
Facts checked22 Sep 2026

Brython integrations

Brython lists 1 integrations on its own site.

  • JavaScript libraries

Alternatives to Brython

See all Brython alternatives →

Used Brython? Be the first to review it

The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Brython for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.

Write a reviewTwo minutes · verified accounts only · read by an editor before it appears

Reviews come only from verified accounts. Sign in or create an account first — your e-mail is never shown.

Your rating

0 characters · at least 80, up to 3,000

Posted from your verified account. Reviews appear after an editor reads them, usually within two working days.

Featured on iTechGuides

Featured on iTechGuides — Brython 7.4/10

Brython is listed in our Code Transpilers directory. Add the badge to your site — it links back to this page.

<a href="https://www.itechguides.com/products/brython/"><img src="https://www.itechguides.com/best/badge/brython.svg" alt="Featured on iTechGuides" width="230" height="46"></a>

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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.

Last updated · How we research and update