1. Wappalyzer
Identifies the technology stack behind any website.
Why it replaces HyHover | All-In-One Developer Toolkit: Covers similar ground in the Developer Tools category: Identifies the technology stack behind any website.
HyHover | All-In-One Developer Toolkit 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.
All-In-One browser extension to inspect, debug, & optimize faster. Completely free & packed with all features in one extension.
| Extension | Rating | Users | Pricing | Best for |
|---|---|---|---|---|
| HyHover | All-In-One Developer Toolkit (original) | — | — | Free | All-In-One browser extension to inspect, debug, & optimize faster. Completely free & packed with all features in one extension. |
| 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. |
| Axiom Browser Automation for Humans & AI | 4.5 | 100K+ | Freemium | Build bots with no-code, code them, or describe them to Claude. Axiom runs on our cloud or your machine. |
| Screen Ruler - Measure and Inspect the Web | 4.3 | 60K+ | Freemium | Web inspector for designers & developers. Measure elements, extract CSS & colors, capture screenshots & more. |
| 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. |
Identifies the technology stack behind any website.
Why it replaces HyHover | All-In-One Developer Toolkit: Covers similar ground in the Developer Tools category: Identifies the technology stack behind any website.
Makes raw JSON responses readable in the browser.
Why it replaces HyHover | All-In-One Developer Toolkit: Covers similar ground in the Developer Tools category: Makes raw JSON responses readable in the browser.
Adds a toolbar button with various web developer tools.
Why it replaces HyHover | All-In-One Developer Toolkit: Covers similar ground in the Developer Tools category: Adds a toolbar button with various web developer tools.
Build bots with no-code, code them, or describe them to Claude. Axiom runs on our cloud or your machine.
Why it replaces HyHover | All-In-One Developer Toolkit: Covers similar ground in the Developer Tools category: Build bots with no-code, code them, or describe them to Claude. Axiom runs on our cloud or your machine.
Web inspector for designers & developers. Measure elements, extract CSS & colors, capture screenshots & more.
Why it replaces HyHover | All-In-One Developer Toolkit: Covers similar ground in the Developer Tools category: Web inspector for designers & developers. Measure elements, extract CSS & colors, capture screenshots & more.
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 HyHover | All-In-One Developer Toolkit: 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.
Inspect React component trees, props and state.
Why it replaces HyHover | All-In-One Developer Toolkit: Another popular Developer Tools extension: Inspect React component trees, props and state.
The Tag Assistant extension works with Tag Assistant to help troubleshoot installation of gtag.js and Google Tag Manager.
Why it replaces HyHover | All-In-One Developer Toolkit: Another popular Developer Tools extension: The Tag Assistant extension works with Tag Assistant to help troubleshoot installation of gtag.js and Google Tag Manager.
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 HyHover | All-In-One Developer Toolkit: 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.
Meta Ads Data Advisor automates connecting your website and marketing data to Meta for better ad performance. No developers needed.
Why it replaces HyHover | All-In-One Developer Toolkit: 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.
Direct comparisons with the extensions people weigh against it.
Wappalyzer is the closest match. Covers similar ground in the Developer Tools category: Identifies the technology stack behind any website.
Yes — JSON Formatter, Web Developer, All in One SEO Analyzer by AIOSEO are free.