Installmap vs NerdyData
What each one is
Installmap publishes the share of each list of companies that runs each piece of software. The lists crawled as sets are the Inc 5000, Y Combinator companies, the Fortune 500, unicorns, SaaS companies and the Tranco top 10,000. Each company homepage is loaded in a headless browser and matched against known fingerprints for analytics, CRM and marketing automation, advertising, chat, e-commerce, consent and hosting tools. The denominators, the crawl dates and the method are published.
NerdyData (nerdydata.com): A code search engine over live domains. You search the HTML, JavaScript, CSS, headers, cookies and XHR URLs of crawled sites to build lists of websites using a technology, and look up one domain's stack.
Row by row
| Installmap | NerdyData | |
|---|---|---|
| Named company lists crawled | Inc 5000 4,886 of 4,929 fetched; Y Combinator 5,386 of 6,133; Fortune 500 472 of 472 fetched; Unicorns 1,000 of 1,000 fetched; SaaS 8,173 of 9,008 fetched; Tranco 1,572 of 1,573 fetched. | check |
| Share printed with its base and date | Yes. Every share prints the count, the crawled denominator and the crawl date. 21,489 domains returned a usable record across the 6 lists. | A report shows its total result count before purchase, with a sample of the websites. The homepage states 14,720,877 total domains. |
| Same tool across every list | Yes. Every tool page shows its count and share in each of the 6 lists, from one crawl run with one detector. | check |
| Cuts by industry, size and country | Yes. Industry, employee size band and country. Segments under 20 crawled domains read n/a. | check |
| Detection fingerprints and categories | 448 fingerprints across 26 categories: script hosts, generator meta tags, response headers, form endpoints and payment iframe hosts. | The homepage counter rendered as 0 technologies tracked next to 14.7M+ domains crawled, so the number could not be read. |
| Rendered against plain fetch recall | Yes. Plain fetches find 35.8% of what the rendered crawl finds on the 3,569 Inc 5000 domains with both records: 13,100 installs against 36,546. | check. The FAQ states the crawler fully renders each page including JavaScript. No plain fetch comparison is published. |
| Failure funnel published | Yes. Each list prints its own attrition above, and the method page prints every step of the segment sample from 30,000 domains selected to 8,291 usable records, with 17 named failure reasons and a count each. | check. No sample size and no failure count is published. |
| Publishing floor per cell | Yes. A segment under 20 crawled domains prints n/a. A tool under 5 installs in a list gets no share. | check |
| Free to read and to cite | Yes. Every page that publishes a number carries a cite block with the number, the denominator and the crawl date. | The pricing page offers free reports to researchers and journalists who plan to publish a report referencing NerdyData, by email request. |
| Lookup of a single site | No. The unit is a named list of companies, not one domain. | Yes. The navigation carries a Domains section and the FAQ describes looking up one domain's stack. |
| Historical records | No. One crawl per list, dated 4 September 2026. | Adoption time-series and diff reports across crawls are stated on the homepage. |
| A list of companies to take away | No. The site publishes shares of a list, not the companies in it. A research post carries the CSV behind that post. | Unlimited list downloads. Rows per download: 5,000 Basic, 200,000 Pro, 1,000,000 Enterprise. CSV, or pushed to HubSpot. |
| Contact data | No. No person, email address or phone number is held. | Yes. Results are stated to include company info, estimated ad spend, emails and LinkedIn profiles for each matching domain. |
| Price | Free to read. Nothing is for sale. | Basic $200 a month, Pro $300 a month, Enterprise $1,000 a month. A yearly toggle states savings of over 70% with no yearly figure published. |
"check" marks a cell NerdyData does not state on its public pages.
What Installmap answers
- What share of a list runs HubSpot: HubSpot is on 25.6% of the 4,886 crawled Inc 5000 domains, against 2.5% of the 472 crawled Fortune 500 domains.
- How far consent tooling has reached the Fortune 500: OneTrust is on 44.9% of the 472 crawled Fortune 500 domains.
- Which analytics tool the newest companies pick: PostHog is on 12.8% of the 5,386 crawled Y Combinator domains.
What NerdyData carries that Installmap does not
- A crawl of 14,720,877 domains, against the six named lists Installmap crawls.
- Search over cookies, headers and XHR URLs, not only the tools a fingerprint list names.
- Diff reports across crawls, so a technology swap is visible.
- Emails and LinkedIn profiles beside each matching domain.
Which one for which question
| Question | Answered by |
|---|---|
| What share of the Inc 5000 runs a given tool, and what is the base | Installmap, 4,886 crawled domains |
| Whether that share holds across 6 different lists | Installmap |
| How the number was produced, and what failed | Installmap, method page |
| Which domains added or dropped a tool since last crawl | NerdyData |
| Which sites carry a given cookie or header | NerdyData |
Notes on NerdyData
The pricing page states a free account unlocks up to 100 rows per report, while the homepage states 500 rows. The two published figures differ.
The FAQ states there is no separate free trial, and that the preview is building a report and seeing the total result count before buying.
API access is stated as pay as you go and not included with a monthly subscription.
All plans are stated to include company filters and all advanced features.
How NerdyData was read
The NerdyData column comes from nerdydata.com/pricing and nerdydata.com, read on 3 September 2026 and 5 September 2026 with no account. A cell reads "check" where the figure is not on those pages. The Installmap column is generated from the crawl when the page is served; the method page carries the sample, the funnel and the failure counts.