Compare software

Web DeveloperChrome DevTools
Free

Free and open source under the GPL.

 Free

Free and included with Google Chrome.

Browser extension Windows, macOS, Linux
  • Dozens of page manipulations one click away, many still missing from devtools
  • Same toolbar across Chrome, Firefox and Edge
  • Built into Chrome with nothing extra to install
  • Performance tracing and network inspection
  • Much of its original value is now covered by built-in developer tools
  • Interface is a dense menu-driven toolbar
  • AI features rely on Google's Gemini service
  • Tests the Chromium engine only
Browser extension Downloadable app
Open source Open source
License: GPL-3.0 License: BSD-3-Clause
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.