Back to Growth Toolbox
Data Enrichment

Wappalyzer

The browser extension that reveals the tech stack of any site in a single click. Indispensable for tech prospecting and competitive analysis. Free for daily use with API available for automation.

Try the tool
Who's it for?OpsSalesGrowth

Review by a Growth Engineer

My verdict: the secret weapon of tech prospecting.

Wappalyzer reveals the tech stack of any site in one click. Free extension, simple, effective. Less complete than BuiltWith for bulk analyses but perfect for quick daily qualification. A must-have for any tech prospecting.

What I like less: less complete than BuiltWith for bulk analyses, detection not always perfect on exotic stacks, API can be slow on large volumes, limited history on the free plan.

My advice: install the free extension immediately. It's free, takes 10 seconds, and you'll use it every day.

Why add it to your stack?

One click on the extension and I see a prospect's entire stack. Game-changer for tech prospecting.

What you can do with it

  • 1Identify companies using specific technologies for prospecting
  • 2Discover your competitors' tech stack in a single click
  • 3Qualify your prospects based on the tools they use
  • 4Monitor technology changes at your clients and prospects

What it does

  • Tech stack detection
  • Browser extension
  • API available
  • Technology history
  • Change alerts

How much?

Starting at 0

Free extension, paid API.

The detailed verdict

Do I really need this?

Essential for anyone doing tech prospecting or competitive analysis. However, for massive bulk analyses, BuiltWith remains more complete. It's really a quick daily qualification tool.

Does it play nice with my stack?

API for automation and Chrome extension for daily use. The API can be slow on large volumes. No native integration with CRMs, you'll need to go through Zapier or custom code.

Is it easy to pick up?

Install the extension, visit a site, done in 2 seconds. Getting started is immediate, even for someone who has never used this type of tool. Zero learning curve.

Is the UX any good?

One click and you have all the info, impossible to be simpler. The extension interface is clear and results are well structured. Some information may be missing on more exotic stacks.

Is it worth it?

Free extension with immediate ROI for tech prospecting. The paid API is affordable for automation needs. Hard to find better value for money for this type of tool.

What I like

  • Tech prospecting to identify companies using specific technologies
  • Competitive analysis in one click to discover your competitors' stack
  • Free extension with immediate ROI for prospect qualification

What I like less

  • Massive bulk analyses where BuiltWith is more complete and suitable
  • Detection not always perfect on certain custom technologies
  • Limited history on the free plan to track changes

Need more details or help building your ideal stack?

Visit official siteGet advice