1. Wappalyzer
Identifies the technology stack behind any website.
Why it replaces CodeShack: 400+ Developer Tools: Covers similar ground in the Developer Tools category: Identifies the technology stack behind any website.
Best CodeShack: 400+ Developer Tools Alternatives in 2026
CodeShack: 400+ Developer Tools is a strong option, but it is not the right fit for everyone. Below are 10 alternatives compared on rating, install base, pricing and the use case each one actually wins on.
About CodeShack: 400+ Developer Tools
Open any of 400+ web developer tools instantly, and grab colors, fonts, SVGs and JSON from any page.
Free
Full reviewComparison at a glance
| Extension | Rating | Users | Pricing | Best for |
|---|---|---|---|---|
| CodeShack: 400+ Developer Tools (original) | — | — | Free | Open any of 400+ web developer tools instantly, and grab colors, fonts, SVGs and JSON from any page. |
| Wappalyzer | 4.6 | 3M+ | Freemium | Developers, agencies and sales teams researching what a site is built with. |
| JSON Formatter | 4.3 | 2M+ | Free | Anyone poking at REST APIs directly in the browser. |
| Web Developer | 4.5 | 1M+ | Free | Web developers who want quick access to common debugging tools without opening DevTools. |
| Accessibility Insights for Web | 4.7 | 100K+ | Free | Accessibility Insights for Web helps developers quickly find and fix accessibility issues. |
| Designer Tools | 4.6 | 100K+ | Freemium | A collection of tools to help you design and develop websites with precision. |
| SN Utils - Tools for ServiceNow | 4.9 | 100K+ | Freemium | Productivity tools for ServiceNow, offered by SN Utils B.V. Not affiliated with ServiceNow, Inc. |
| Screen Ruler - Measure and Inspect the Web | 4.3 | 60K+ | Freemium | Web inspector for designers & developers. Measure elements, extract CSS & colors, capture screenshots & more. |
| React Developer Tools | 3.9 | 5M+ | Free | React developers debugging component state and render performance. |
| Tag Assistant | 3.9 | 3M+ | Free | The Tag Assistant extension works with Tag Assistant to help troubleshoot installation of gtag.js and Google Tag Manager. |
| Take Webpage Screenshots Entirely - FireShot | 4.8 | 3M+ | Free | Anyone who needs fast, reliable full-page screenshots for work, support or documentation. |
CodeShack: 400+ Developer Tools alternatives in detail
View Extension
2. JSON Formatter
Makes raw JSON responses readable in the browser.
Why it replaces CodeShack: 400+ Developer Tools: Covers similar ground in the Developer Tools category: Makes raw JSON responses readable in the browser.
3. Web Developer
Adds a toolbar button with various web developer tools.
Why it replaces CodeShack: 400+ Developer Tools: Covers similar ground in the Developer Tools category: Adds a toolbar button with various web developer tools.
4. Accessibility Insights for Web
Accessibility Insights for Web helps developers quickly find and fix accessibility issues.
Why it replaces CodeShack: 400+ Developer Tools: Covers similar ground in the Developer Tools category: Accessibility Insights for Web helps developers quickly find and fix accessibility issues.
5. Designer Tools
A collection of tools to help you design and develop websites with precision.
Why it replaces CodeShack: 400+ Developer Tools: Covers similar ground in the Developer Tools category: A collection of tools to help you design and develop websites with precision.
6. SN Utils - Tools for ServiceNow
Productivity tools for ServiceNow, offered by SN Utils B.V. Not affiliated with ServiceNow, Inc.
Why it replaces CodeShack: 400+ Developer Tools: Covers similar ground in the Developer Tools category: Productivity tools for ServiceNow, offered by SN Utils B.V. Not affiliated with ServiceNow, Inc.
7. Screen Ruler - Measure and Inspect the Web
Web inspector for designers & developers. Measure elements, extract CSS & colors, capture screenshots & more.
Why it replaces CodeShack: 400+ Developer Tools: Covers similar ground in the Developer Tools category: Web inspector for designers & developers. Measure elements, extract CSS & colors, capture screenshots & more.
8. React Developer Tools
Inspect React component trees, props and state.
Why it replaces CodeShack: 400+ Developer Tools: Another popular Developer Tools extension: Inspect React component trees, props and state.
9. Tag Assistant
The Tag Assistant extension works with Tag Assistant to help troubleshoot installation of gtag.js and Google Tag Manager.
Why it replaces CodeShack: 400+ Developer Tools: Another popular Developer Tools extension: The Tag Assistant extension works with Tag Assistant to help troubleshoot installation of gtag.js and Google Tag Manager.
10. Take Webpage Screenshots Entirely - FireShot
Take FULL webpage screenshots. Capture, edit and save them to PDF/JPEG/GIF/PNG, upload, print, send to OneNote, clipboard or email.
Why it replaces CodeShack: 400+ Developer Tools: Another popular Developer Tools extension: Take FULL webpage screenshots. Capture, edit and save them to PDF/JPEG/GIF/PNG, upload, print, send to OneNote, clipboard or email.
Compare CodeShack: 400+ Developer Tools head-to-head
Direct comparisons with the extensions people weigh against it.
Wappalyzer vs JSON FormatterStack detection for recon work against readable API responses in the browser.React Developer Tools vs WappalyzerBoth are developer tools extensions people shortlist together — see how ratings, install base, pricing and day-to-day use differ.React Developer Tools vs JSON FormatterBoth are developer tools extensions people shortlist together — see how ratings, install base, pricing and day-to-day use differ.All comparisonsThe full compare hub, grouped by category.
Explore further
Frequently asked questions
What is the best alternative to CodeShack: 400+ Developer Tools?
Wappalyzer is the closest match. Covers similar ground in the Developer Tools category: Identifies the technology stack behind any website.
Is there a free alternative to CodeShack: 400+ Developer Tools?
Yes — JSON Formatter, Web Developer, Accessibility Insights for Web are free.