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Sizzy

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

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Sizzy is a desktop browser for web developers that consolidates project management, responsive testing, debugging, screenshot capture, terminals, and AI coding agents into one application. It uses Chromium and provides synchronized multi-device viewports, isolated browser sessions per user role, a unified console, and a command palette.

12 alternatives to Sizzy

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

  1. Polypane

    The browser for web developers who care.

    Covers 0 of 15 key features.

    59 out of 100 matchContact sales

  2. Espresso

    Espresso

    Covers 0 of 15 key features.

    56 out of 100 match—

  3. CSS Studio

    You and your agent, designing together.

    Covers 0 of 15 key features.

    52 out of 100 match—

  4. StackBlitz

    Instant Dev Environments | Click. Code. Done.

    Covers 0 of 15 key features.

    Free plan
    52 out of 100 matchContact sales

  5. Blisk

    Cross-device testing done right

    Covers 1 of 15 key features.

    Free plan
    50 out of 100 matchFree

  6. shotsnapp

    Create beautiful device mockup images for your app or website design

    Covers 1 of 15 key features.

    Free plan
    47 out of 100 matchContact sales

  7. Browsersync

    Time-saving synchronised browser testing

    Covers 0 of 15 key features and is open source.

    Free planOpen source
    46 out of 100 matchContact sales

  8. SigmaOS

    The new home for your internet.

    Covers 0 of 15 key features.

    Free plan
    46 out of 100 matchFree

  9. BrowserOS neo

    The Missing Browser for Claude, Cowork & Codex

    Covers 0 of 15 key features and is open source.

    Free planOpen source
    45 out of 100 matchContact sales

  10. Strawberry

    Do hours of work in minutes

    Covers 0 of 15 key features.

    Free plan
    44 out of 100 match$20/mo

  11. Wavebox

    Rethink the Web - Wavebox Productivity Browser

    Covers 0 of 15 key features.

    Free plan
    43 out of 100 match$8.33/mo

  12. Cypress

    A quality platform for teams shipping modern web applications, combining end-to-end, compo

    Covers 0 of 15 key features and is open source.

    Free planOpen source
    42 out of 100 matchContact sales