# Wappalyzer vs BuiltWith

> Wappalyzer vs BuiltWith, checked October 2026: free use, extensions, lead lists, history, API and prices. Plus a free way to check one site with no install.

Canonical page: https://sitepeel.dev/compare/wappalyzer-vs-builtwith/

Both tell you what a website is built with, and both now sell data to sales teams. Here’s how they differ, and a free option for one-off checks.

Published: 2026-10-27

Facts and prices checked: 2026-10-27

Free website tool for this task: [Tech stack checker](https://sitepeel.dev/free-tools/built-with/index.md) (https://sitepeel.dev/free-tools/built-with/)

## In short

- Wappalyzer: free, active extension; plans from $250 a month
- BuiltWith: free web lookups with history; plans from $295 a month
- One site, free, no install: Sitepeel’s tech stack checker

## Side by side

Wappalyzer and BuiltWith compared

|  | Wappalyzer | BuiltWith |
| --- | --- | --- |
| Free use | Extension, plus 50 lookups a month with an account | Single lookups on the website |
| Paid plans | From $250 a month or $2,500 a year | From $295 a month or $2,950 a year |
| Browser extension | Yes, updated October 2026 | Yes, Chrome last updated May 2022 |
| Lead lists and company data | Yes | Yes |
| Technology history | Not listed | Yes, going back years |
| Alerts when a site changes | Yes | Not listed |
| API | Yes, credits on paid plans | Yes |
| Works in | Chrome, Firefox, Edge, Safari, web, API | Web, Chrome, Firefox, Edge, API |

Good to know: Checked on October 27, 2026 on each product’s own site and store page. We make Sitepeel, a free tech stack checker.

## Pick Wappalyzer if…

- You want a free extension that’s updated often
- You prospect by technology and want company data in your CRM
- You need Safari or an iPhone app

## Pick BuiltWith if…

- You want to see how a site’s stack changed over the years
- You research a market: every site using a tool
- You prefer looking things up on a website, not in an extension

## Just checking one site? It’s free

If you only want to know what one site runs on, you don’t need either plan. Sitepeel’s tech stack checker shows the framework, CMS, hosting and libraries with the evidence, plus the fonts and colors. Free, no sign-in.

![Sitepeel tech stack checker result: linear.app is built with React, Motion and Inter](https://sitepeel.dev/images/compare/sitepeel-built-with.webp)

Sitepeel’s free tech stack checker on linear.app.

- [Check a website’s tech stack for free](https://sitepeel.dev/free-tools/built-with/index.md)

## The verdict

**Verdict:** Wappalyzer for a live extension and sales data. BuiltWith for history and market lists. Sitepeel when you just want a free answer about one site.

## Questions and answers

### Is Wappalyzer or BuiltWith more accurate?

Both read the same clues from a page: scripts, headers, meta tags and file names. Results differ by site. For anything important, check with two tools and look at the evidence.

### Which is cheaper, Wappalyzer or BuiltWith?

Both are free for single lookups. Paid plans start at $250 a month for Wappalyzer and $295 a month for BuiltWith, with yearly discounts.

### Is there a free way to check one site?

Yes. Sitepeel’s tech stack checker is free with no sign-in: paste a link and see the stack with evidence, plus the site’s fonts and colors.

## Further reading

- [Wappalyzer: pricing](https://www.wappalyzer.com/pricing/)
- [BuiltWith: plans](https://builtwith.com/plans)
- [Wappalyzer on the Chrome Web Store](https://chromewebstore.google.com/detail/wappalyzer-technology-pro/gppongmhjkpfnbhagpmjfkannfbllamg)
- [BuiltWith on the Chrome Web Store](https://chromewebstore.google.com/detail/builtwith-technology-prof/dapjbgnjinbpoindlpdmhochffioedbn)

## Related pages

- [BuiltWith alternatives](https://sitepeel.dev/compare/builtwith-alternatives/index.md): BuiltWith alternatives, checked October 2026: free tech stack lookups (Sitepeel, WhatRuns, WhatCMS) and paid lead data (Wappalyzer), with prices and limits.
- [Wappalyzer alternatives](https://sitepeel.dev/compare/wappalyzer-alternatives/index.md): Wappalyzer alternatives, checked October 2026: Sitepeel, BuiltWith, WhatRuns, WhatCMS and Hoverify. Free and paid ways to see what a website is built with.
- [Find what a site is built with](https://sitepeel.dev/guides/what-is-a-website-built-with/index.md): Find a website’s framework, CMS or site builder, hosting and libraries from the traces in its code and headers, and learn what no checker can see.