1. Wappalyzer
Identifies the technology stack behind any website.
Why it replaces Developer Kit: Covers similar ground in the Developer Tools category: Identifies the technology stack behind any website.
Best Developer Kit Alternatives in 2026
Developer Kit 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 Developer Kit
A chrome extension that holds all your developer needs in one single pack, improving efficiency.
Free
Full reviewComparison at a glance
| Extension | Rating | Users | Pricing | Best for |
|---|---|---|---|---|
| Developer Kit (original) | — | — | Free | A chrome extension that holds all your developer needs in one single pack, improving efficiency. |
| 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. |
| User-Agent Switcher for Chrome | 3.9 | 1M+ | Free | Spoofs & Mimics User-Agent strings. |
| Color Picker for Chrome™ | 4.0 | 700K+ | Free | HEX, RGB Color picker, Advanched Eyedropper, Find color code on any page |
| All in One SEO Analyzer by AIOSEO | 4.9 | 50K+ | Free | The All in One SEO Analyzer is a free SEO tool that helps analyze your website and optimize it for search engines. |
| 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. |
| Meta Ads Data Advisor | 3.9 | 3M+ | Free | Meta Ads Data Advisor automates connecting your website and marketing data to Meta for better ad performance. No developers needed. |
Developer Kit alternatives in detail
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2. JSON Formatter
Makes raw JSON responses readable in the browser.
Why it replaces Developer Kit: 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 Developer Kit: Covers similar ground in the Developer Tools category: Adds a toolbar button with various web developer tools.
4. User-Agent Switcher for Chrome
Spoofs & Mimics User-Agent strings.
Why it replaces Developer Kit: Covers similar ground in the Developer Tools category: Spoofs & Mimics User-Agent strings.
5. Color Picker for Chrome™
HEX, RGB Color picker, Advanched Eyedropper, Find color code on any page
Why it replaces Developer Kit: Covers similar ground in the Developer Tools category: HEX, RGB Color picker, Advanched Eyedropper, Find color code on any page
6. All in One SEO Analyzer by AIOSEO
The All in One SEO Analyzer is a free SEO tool that helps analyze your website and optimize it for search engines.
Why it replaces Developer Kit: Covers similar ground in the Developer Tools category: The All in One SEO Analyzer is a free SEO tool that helps analyze your website and optimize it for search engines.
7. React Developer Tools
Inspect React component trees, props and state.
Why it replaces Developer Kit: Another popular Developer Tools extension: Inspect React component trees, props and state.
8. Tag Assistant
The Tag Assistant extension works with Tag Assistant to help troubleshoot installation of gtag.js and Google Tag Manager.
Why it replaces Developer Kit: Another popular Developer Tools extension: The Tag Assistant extension works with Tag Assistant to help troubleshoot installation of gtag.js and Google Tag Manager.
9. 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 Developer Kit: 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.
10. Meta Ads Data Advisor
Meta Ads Data Advisor automates connecting your website and marketing data to Meta for better ad performance. No developers needed.
Why it replaces Developer Kit: Another popular Developer Tools extension: Meta Ads Data Advisor automates connecting your website and marketing data to Meta for better ad performance. No developers needed.
Compare Developer Kit 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 Developer Kit?
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 Developer Kit?
Yes — JSON Formatter, Web Developer, User-Agent Switcher for Chrome are free.