💡 Pick it for the most complete free toolkit for debugging JavaScript, network requests, CSS, and performance.
Chrome DevTools is a set of web developer tools built directly into the Google Chrome browser. It allows web developers to debug,...
Best SuperDev Pro Alternatives ranked by AI · updated Aug 2026
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SuperDev Pro is a browser-based toolkit for developers and designers who inspect, edit, and troubleshoot websites. It provides visual web-page editing, element inspection, CSS extraction, and asset utilities beyond standard browser workflows.
Top 6 SuperDev Pro alternatives
💡 Pick it for strong free CSS layout and accessibility inspection, especially when Firefox compatibility matters.
Built-in tools for debugging, testing, and profiling web applications in Firefox
Pros
- Open-source and customizable
- Network analysis and performance tools
Cons
- May not be as feature-rich as Chrome DevTools
- Less intuitive UI for some users
3
💡 Pick it for free, visual webpage experimentation and design feedback without a heavier DevTools workflow.
VisBug is a browser extension that allows you to design in the browser.
Pros
- Provides design tools directly in the browser
- Free to use
Cons
- Not as focused on CSS inspection as CSS Scan
💡 Pick it for serious responsive and accessibility testing across multiple viewports.
Polypane is a web development tool that allows you to build responsive websites faster with multiple synchronized views and integrated developer tools.
Starting from $15/month
5
Responsively App
Responsively App contributors
💡 Pick it for a free desktop workflow that previews one site across many device sizes at once.
Responsively App is a free, open-source desktop browser for testing websites across synchronized device views. It is aimed at frontend developers who...
Pros
- Synchronized scrolling and interactions across viewports
- More capable local debugging than Responsivize
- Open-source and available for Windows, macOS, and Linux
Cons
- Requires a desktop installation
- Less useful for remote browser and real-device testing than BrowserStack
- Can use substantial memory with many views open
Free, open source
💡 Pick it when your main task is quickly copying and comparing CSS styles from live webpages.
CSS Scan is a browser extension that allows you to easily inspect, copy, and edit CSS styles on any website.
$19 one-time payment
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