# BuiltWith alternatives

> BuiltWith alternatives, checked October 2026: free tech stack lookups (Sitepeel, WhatRuns, WhatCMS) and paid lead data (Wappalyzer), with prices and limits.

Canonical page: https://sitepeel.dev/compare/builtwith-alternatives/

BuiltWith answers “what is this site built with?” and sells lead lists. If you only need the first part, you don’t need a $295 plan.

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

- Checking one site? Sitepeel, WhatRuns and WhatCMS are free
- Need lead lists and alerts? Wappalyzer is the closest match
- BuiltWith keeps the longest history of a site’s technology

## The short list

BuiltWith’s single lookups are free, but its plans start at $295 a month and its Chrome extension hasn’t been updated since May 2022. Most people only want to check one site.

BuiltWith alternatives compared

| Tool | Best for | Price | Works in |
| --- | --- | --- | --- |
| Sitepeel tech stack checker | A free check of one site, with evidence | Free, no sign-in | Any browser, from a link |
| Wappalyzer | Lead lists and a free extension | Free extension; plans from $250 a month | Chrome, Firefox, Edge, Safari, web |
| WhatRuns | A free extension, WordPress plugins | Free | Chrome, Firefox |
| WhatCMS | Free CMS checks and a cheap API | Free lookups; API from $20 a month | Web, API |
| Hoverify | Tech stack inside a dev toolbox | $30 a year or $89 once | Chrome, Firefox |

Good to know: Checked on October 27, 2026 on each product’s own site and store page. “No” means we couldn’t find it there. We make Sitepeel.

## 1. Sitepeel tech stack checker

Paste a link and Sitepeel shows the framework, CMS or site builder, hosting, CSS and UI libraries, animation and 3D libraries and analytics, each with the evidence it found. It also lists the fonts and colors.

![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.

- No lead lists, history or API
- Server code and databases can’t be seen from outside

## 2. Wappalyzer

Wappalyzer’s free extension names a site’s technologies as you browse, and a free account adds 50 lookups a month. Paid plans add lead lists, company data, alerts and an API.

![Wappalyzer’s website: “Find companies by the technologies they use”](https://sitepeel.dev/images/compare/wappalyzer-home.webp)

Wappalyzer’s website on October 27, 2026.

## 3. WhatRuns

WhatRuns is a free extension that shows a site’s technologies, WordPress plugins and fonts, and can alert you when a site you follow changes its stack. No sign-up needed.

![WhatRuns’s website: “Discover what runs a website”](https://sitepeel.dev/images/compare/whatruns-home.webp)

WhatRuns’s website on October 27, 2026.

## 4. WhatCMS

WhatCMS checks which CMS and hosting a site uses, free on its website. Its free API gives 500 checks a month for scripts.

## Which one should you pick?

**Verdict:** For a free answer about one site, use Sitepeel (from a link) or WhatRuns (in your browser). For sales data at scale, Wappalyzer. Keep BuiltWith if you need years of history.

## Questions and answers

### Is BuiltWith free?

Single site lookups on builtwith.com are free. Its paid plans, with lead lists and reports, start at $295 a month or $2,950 a year.

### What is the best free BuiltWith alternative?

For one site at a time, Sitepeel’s tech stack checker (from a link, no sign-in) or the WhatRuns extension. WhatCMS is good for a quick CMS check.

### Is Wappalyzer better than BuiltWith?

For a free browser extension and lead lists, Wappalyzer is newer and updated often. BuiltWith is stronger on long technology history. See our Wappalyzer vs BuiltWith page.

## Further reading

- [BuiltWith: plans](https://builtwith.com/plans)
- [Wappalyzer: pricing](https://www.wappalyzer.com/pricing/)
- [WhatRuns](https://www.whatruns.com/)
- [WhatCMS: API plans](https://whatcms.org/API/Plans)

## Related pages

- [Wappalyzer vs BuiltWith](https://sitepeel.dev/compare/wappalyzer-vs-builtwith/index.md): 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.
- [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.