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Polypane

The browser for web developers who care.

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Polypane is a desktop browser built for web development rather than general browsing. It shows multiple viewports side by side with synchronized scrolling, hover, keyboard and form input, and provides continuous feedback on page structure, metadata, accessibility and SEO while you work. It runs on Windows, Mac and Linux, supports Chromium devtools extensions, and is developed by a bootstrapped independent company.

12 alternatives to Polypane

Ranked by how well each tool replaces Polypane: shared features, audience, price and popularity.

  1. Sizzy

    The browser for web developers. One browser for the whole job of building the web.

    Covers 0 of 15 key features and has a free plan.

    Free plan
    61 out of 100 matchFree

  2. Pinegrow

    Edit real HTML and CSS visually. A desktop web editor for Bootstrap, Tailwind CSS, SASS, S

    Covers 0 of 15 key features.

    55 out of 100 match—

  3. Fenêtre

    Picture-in-picture for Mac

    Covers 0 of 15 key features and has a free plan.

    Free plan
    54 out of 100 matchContact sales

  4. Penpot

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    Covers 0 of 15 key features, has a free plan and is open source.

    Free planOpen source
    54 out of 100 match$7/mo

  5. Pqina

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    Covers 0 of 15 key features and has a free plan.

    Free plan
    50 out of 100 matchFree

  6. Prepros

    Your Friendly Web Development Companion

    Covers 0 of 15 key features and has a free plan.

    Free plan
    49 out of 100 matchContact sales

  7. PhantomJS

    Scriptable Headless Browser

    Covers 0 of 15 key features and is open source.

    Open source
    48 out of 100 match—

  8. Pidoco

    Online wireframe and UX prototyping tool

    Covers 0 of 15 key features.

    48 out of 100 match—

  9. BrowserOS neo

    The Missing Browser for Claude, Cowork & Codex

    Covers 0 of 15 key features, has a free plan and is open source.

    Free planOpen source
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  10. Brackets

    Now Phoenix Code | Free Open Source Code Editor with Live Preview

    Covers 0 of 15 key features, has a free plan and is open source.

    Free planOpen source
    44 out of 100 matchContact sales

  11. Plunker

    Helping you build the web

    Covers 0 of 15 key features and has a free plan.

    Free plan
    43 out of 100 matchFree

  12. Codeply

    HTML, CSS, JavaScript editor playground for designers & developers

    Covers 0 of 15 key features and has a free plan.

    Free plan
    43 out of 100 matchFree