Wappalyzer vs Kitsuvo: which one tells you a site was built with AI?
Wappalyzer answers "what is this built with?" for millions of people. Kitsuvo answers a narrower question, "was this made with an AI app builder?", and acts on the answer.
Wappalyzer vs Kitsuvo comes down to the question you are asking. Wappalyzer is a technology profiler: open a site and it lists what the site uses, from React and Shopify to Google Analytics, and it recognises some AI builders such as Lovable. Kitsuvo is a browser built for one judgement: how likely it is that a page was made with an AI app builder, scored from 0 to 100 with the evidence, and what to do about it, such as filtering those sites out of search results. If you research companies' tech stacks, Wappalyzer is the tool. If you want less AI-built content in your browsing, Kitsuvo is.
We make Kitsuvo. Wappalyzer facts below come from its own pages, read on October 13, 2026.
How do Wappalyzer and Kitsuvo compare?
| Wappalyzer | Kitsuvo | |
|---|---|---|
| What it is | Browser extension and lookup service | Desktop browser for Mac and Windows |
| Main question | What technologies does this site use? | Was this page likely built with an AI app builder? |
| Output | A list of technologies by category | A 0 to 100 score, a verdict, the builder when known, and the evidence |
| AI builders | Some, listed as technologies (for example Lovable, under page builders) | Lovable, Bolt, v0, Replit, Base44 and about 15 more, from fingerprints |
| Acts on results | No; it reports | Filters likely AI-built search results and pages, with a way through |
| Scale | Lookups, lead lists and an API on paid plans | Pages you open, plus a free public homepage checker |
| Price | Free account with 50 lookups a month; paid plans from $250 a month (pricing) | Free |
| Reach | About 3,000,000 Chrome users (Chrome Web Store) | A new, independent project |
What does Wappalyzer do well?
Breadth and maturity. Wappalyzer describes itself as "a technology profiler that shows you what websites are built with", and it has been doing that for years. It tracks thousands of technologies, works as an extension in the browser you already use, and its paid plans add bulk lookups, lead lists and an API for sales and research teams.
It has also started listing AI builders. Its Lovable page describes Lovable as "an AI-based collaborative page builder" and says it tracks 58,000 live websites using it. That number is a useful signal of how far one builder has spread, though our own research found the figure changing between visits, so treat it as approximate.
Where does a technology profiler stop?
By design, Wappalyzer reports technologies; it doesn't weigh them into a judgement. That leaves three gaps for anyone trying to spot AI-built sites:
- Coverage of AI builders. When we checked its public directory in October 2026 we found entries for Lovable and Base44 but none for Bolt or v0, two of the largest builders. Wappalyzer may detect more than the directory lists, but we couldn't confirm it.
- Sites with the obvious fingerprints removed. A site moved to a custom domain with its badge hidden may still carry smaller traces: an untouched scaffold title, a builder's default share image, a stock component kit. A profiler lists the components; it doesn't add them up.
- What to do next. A list in a popup doesn't change your search results or stop a page from loading.
None of this is a criticism of Wappalyzer's job, which is a different job. It's why "Wappalyzer alternative" means different things to different people.
What does Kitsuvo do differently?
Kitsuvo is a browser rather than an add-on, so it scores every page as it loads, from the source, the scripts and files the page loaded, and the hosting. Each score comes with the reasons, for example "Hosted on Lovable" or "Untouched scaffold page title", and how much each one counted. The builder's name appears only when a fingerprint names it; style alone can't tell Lovable from Bolt from a person using the same components.
Then it acts, if you want it to. With filtering on, Kitsuvo folds likely AI-built results on Google, Bing and DuckDuckGo into one line you can open, and holds likely AI-built pages behind a notice with Show this site anyway. Detection runs on your computer, and Kitsuvo has no telemetry.
Where it is weaker: the browser only knows about pages you open, Kitsuvo has no bulk lookup service or lead lists, and asks you to use a different browser, which is a real cost. Its scores are estimates. A hand-built site using popular components can score higher than it should, which is why every score shows its evidence and you can mark a verdict wrong.
Which should you use?
- You research companies, audit stacks or build prospect lists: Wappalyzer.
- You want to know, page by page, whether a site was likely vibe coded, and why: Kitsuvo.
- You want fewer AI-built sites in search results: Kitsuvo. A profiler doesn't filter.
- You want both in one place: keep Wappalyzer in your everyday browser for stack questions and open sites you are unsure about in Kitsuvo.
If you want to check by hand first, what is this website built with? covers the general method and which AI builder made this website? lists the fingerprints for each builder. For the wider field of AI-site checkers, see AI website detector tools compared and the best AI-generated website detectors.
Questions people ask
Does Wappalyzer tell you if a site was built with AI?
Not as a verdict. It lists some AI builders, such as Lovable, as technologies when it finds their fingerprints, alongside everything else a site uses. It does not weigh them into a score or show how likely the site is to be AI-built.
Is Kitsuvo a Wappalyzer alternative?
For one question, yes: whether a site was likely built with an AI app builder. For general technology profiling, lead lists or bulk lookups, no. Kitsuvo doesn't try to list every technology a site uses.
Does Kitsuvo have a browser extension like Wappalyzer?
There are developer-preview extension packages for Chromium browsers, Firefox and Safari that use local builder fingerprints. They do less than the desktop browser, and public store listings are still pending.