Find sites by stack
Every website running a specific technology, or an exact combination of them, turned into a qualified lead list.
- All websites using Hotjar or VWO
- Shopify + Klaviyo stores
- HubSpot + Next.js companies
ForSaaS foundersSales teams
Technographic search engine · index refreshed continuously
Find every company by the technology it runs
StackScan indexes 100M+ websites across 50,000+ technologies. Search by stack, keyword, and location, then export qualified prospect lists your team can act on today.
Plans from $39/mo - comparable tools start at ~$250
GDPR-friendly data
Setup in under 2 minutes
CSV, XLS & API access
- Websites indexed
- 100M+
- Technologies detected
- 50K+
- Countries covered
- 200+
- Technology categories
- 350+
Featured on leading B2B SaaS discovery platforms
Built for
Built for the way you prospect
Every technology choice a company makes is a buying signal. StackScan turns those signals into lists you can act on.
Keyword & niche discovery
Search titles, meta, and page content across the index to surface every site in a niche within seconds.
- Graphic design blogs and stores
- Law firms and dental clinics
- Real estate and fitness coaches
ForSEO agenciesB2B marketers
Competitor intelligence
See exactly who runs a competitor’s product. These are your warmest displacement targets, with firmographic context - company size, industry, and location.
- All Zendesk customers, 50-500 staff
- Websites using SEMrush or Ahrefs
- Salesforce + HubSpot users
ForSaaS companiesProduct marketers
ICP list building
Combine stack, keyword, geo, and firmographic signals into one filter set that matches your exact ideal-customer profile (ICP).
- B2B SaaS on HubSpot + Segment
- Shopify + Klaviyo ecommerce brands
- Salesforce users, 50+ employees
ForRevenue teamsSDR teams
Also used daily for local-market targeting, platform-migration outreach, security research, WordPress plugin targeting, and pre-acquisition tech diligence.
How it works
Signup to shipped outreach in four steps
-
1
Sign up & choose a plan
Monthly or yearly, from $39/mo. Upgrade, downgrade, or cancel anytime.
-
2
Search the index
By technology, keyword, or domain. Combine filters to pinpoint your target market.
-
3
Refine to your ICP
Narrow by country, TLD, stack combinations, and firmographics until the list is laser-focused.
-
4
Export & launch
Download enriched CSVs ready for your CRM or outreach tool, and start the conversation.
The platform
Three tools. One index.
Real screens from the StackScan app, so you know exactly what you'll be working in.
Tech Lookup
Pick a technology and see its entire footprint
Type any of 50,000+ tracked technologies and get its global adoption picture: total sites detected, country-level distribution, and the full domain list behind it.
- Autocomplete across the full technology index, with live site counts
- Country-by-country share for every stack
- Combine stacks with include / exclude filters
Keyword Scan
Mine the web by keyword and intent
Find websites by what they publish, not just what they run. Scan titles, meta, and content across 100M+ sites and refine to a clean, niche-specific list.
- Any keyword, topic, or niche, with millions of results in seconds
- Layer geo, TLD, and technology filters on top
- Relevance scoring keeps the noise out of your lists
Reports & export
Export lists your CRM can actually use
Every search becomes a downloadable report with domains enriched by up to 20 data points, ready for your CRM, outreach tool, or spreadsheet.
- One-click CSV download with company, social & spend enrichment
- Re-run any report against refreshed data
- Bulk domain enrichment and API access on higher plans
Behind the data
The index doing the heavy lifting
Every search runs against one of the largest technographic datasets anywhere, rebuilt and refreshed continuously.
25TB
Data processed monthly
Up to 20
Data points per website
100+
Industry verticals covered
1,000+
TLDs & gTLDs analyzed
Browse the web
Pick a starting point: technology or topic
Jump straight into a category to see who is running what, where.
By technology
All categories
Website builder
Squarespace
eCommerce
Shopify
Email marketing
Analytics
By keyword
Search keywords
Business Type
eCommerce Niche
T-shirt store Print on demand Dropshipping Pet store Jewelry store
Tech / SaaS
Content / Media
Design blog Marketing agency News site Recipe blog Photography
Health & Fitness
Why StackScan
The depth of enterprise tools, at a fraction of the cost
StackScan gives you the same data, and more, than tools that cost $200 to $300 per month. Plans start at $39 per month, and you can cancel anytime.
| Feature |  |
BuiltWith | SimilarTech | Wappalyzer | PublicWWW |
|---|---|---|---|---|---|
| Technology detection | 50,000+ | 10,000+ | |||
| Keyword / niche search | |||||
| Country / geo filtering | |||||
| Firmographic data & filtering | |||||
| Bulk domain export | |||||
| up to 20 data points per website | |||||
| "Missing tech" detection | |||||
| 200+ country / geo coverage | |||||
| Allowed stacks (starter plan) | 5 | 2 | N/A | 2 | N/A |
| Starting price | from $39/mo | $295/mo | $209/mo | $249/mo | $109/mo |
Comparison based on publicly available feature information. Features may vary by plan tier.
Customers
Trusted by sales teams, agencies and researchers worldwide
The founders, marketers, and security researchers who power their prospecting with StackScan every day.
★★★★★
"We manufacture organic skincare and needed local retailers to stock our products. StackScan helped us pull a clean list of beauty and wellness stores in the US northeast in minutes. Within a week we'd landed our first three retail partnerships."
★★★★★
"Found StackScan from a Reddit thread and signed up the same day. The signal-to-noise ratio on the prospect lists is genuinely impressive."
★★★★★
"We focus on HubSpot users in Germany and Austria. StackScan is the only tool we found that lets us combine technology and country filters and export a clean list. It replaced a manual process that used to take a full day."
Your next 1,000 prospects are already running the tech you sell
Start searching 100M+ websites by stack, keyword, and country today.
Monthly & yearly plans · Cancel anytime · Data refreshed continuously