Best BuiltWith Alternatives in 2026: 12 Tools for Lead Lists and Site Lookups

By Laurel · Updated Oct 22, 2026

The best BuiltWith alternative depends on which job you hired it for. If you build outbound lists of companies running a specific tool, Wappalyzer's paid plans, Apollo.io and ZoomInfo are the closest replacements, and HG Insights, 6sense and Demandbase are the enterprise options. If you just need to see what one website runs, Wappalyzer's free extension, WhatRuns, W3Techs and Netcraft cost nothing, and BuiltWith's own single-site lookups are free too.

That second point matters. Plenty of teams searching for a BuiltWith alternative are paying $295 or more a month for something a free browser extension would do. We sort every tool below by the reader it suits, then compare on the three things that decide whether the data is any good: how it detects technology, how it charges (credits, seats or flat), and what you need to think about on compliance. For the wider category, see the best technographic data providers, and for free single-site tools, the best website technology checkers.

Key Facts

• Salesforce's State of Sales report puts selling at 40% of a rep's workweek, with 60% spent on other work, which is the case for filtering lists by installed technology before anyone starts prospecting.
• The same report says reps spend almost one full day of the workweek on prospecting.
• BuiltWith says it tracks 127,890 web technologies across 491.9 million domains (vendor claim), with flat per-account pricing from $295 a month.
• Median tenure with a current employer is 4.1 years, per the US Bureau of Labor Statistics, so any contact attached to a technology record goes stale on a similar clock.
• The French regulator fined Kaspr EUR 240,000 for scraping LinkedIn members' contact details, a reminder that personal contact data is where privacy rules bite, not the technology fact about a company.

Why teams look past BuiltWith

BuiltWith is good at what it does. It's the default name for "give me a list of websites running Shopify, or HubSpot, or a given payment tool", and its plans page is clear about what you get. The reasons teams move on are mostly about fit and price shape, not quality.

Here is BuiltWith's current pricing, flat per account rather than per user:

Annual billing is cheaper than monthly (ten months' price for twelve). Minimum terms are one month on monthly plans and one year on annual plans. Larger "Team Ultra" options exist, so confirm those figures with BuiltWith directly.

None of this means BuiltWith is the wrong choice. If you're building lists by installed web technology every week, the flat price can be a bargain. If you want a broader tool, or a cheaper way in, read on.

Quick Comparison Table

Replacements for sales and RevOps: list-building by installed technology

These tools answer "which companies run X, and who do I contact?" They replace BuiltWith's list-building job, usually with contacts or intent attached.

1. Wappalyzer: the closest like-for-like, with a free side

Wappalyzer is the nearest direct replacement because it does both jobs. The extension is free for developers and marketers, and the paid plans add lead lists by technology. Its site describes prospect lists built by technology, keyword, market, traffic and geography, plus a technology lookup that reveals a site's technologies, company details and contact data, and an API. If Wappalyzer is already on your shortlist and you want to see what else competes with it, read the Wappalyzer alternatives. If it's down to these two, the Wappalyzer vs BuiltWith comparison prices both side by side.

Paid plans on its pricing page, all shown monthly: Pro $250/mo, Business $450/mo, Enterprise from $850/mo. Annual billing saves 17%, and annual prices aren't shown, so ask Wappalyzer for the figure. Pro gives one user and 2 lead-list technology targets with 5,000 technology lookups. Business gives 5 users, unlimited targets, 20,000 lookups and CRM enrichment. Plan API credits expire after 60 days. A free account includes 50 technology lookups and 50 email verifications a month, plus 5 website alerts.

The credit model is the big difference from BuiltWith. BuiltWith charges a flat fee for access. Wappalyzer meters lookups and verifications, so cost tracks use. Wappalyzer says it covers "thousands of web technologies across millions of websites" (vendor claim) with no hard count, while BuiltWith publishes 127,890 technologies.

Best for: developers and marketers (free), SMB sellers starting list-building (paid). Not ideal for: teams that need contacts and sequencing in the same tool.

2. Apollo.io: tech filters inside a prospecting tool

Apollo is the budget path from "a list of sites" to "a sequence sent to the right people". Its help center describes a technologies filter that lets you find leads by the type of technologies being employed at a company, covering more than 1,500 technologies, so the catalog is far smaller than BuiltWith's. The data page claims 240M+ contacts and 30M+ companies (vendor claim).

Plans are priced per seat. Free is $0. Basic is $49 per seat a month billed annually or $65 billed monthly. Professional is $79 annually or $99 monthly. Organization is $119 annually with a 3-seat minimum and no monthly option. Credits are the unit: an email costs 1, a phone number 8, and credits are pooled across the team with no rollover. Apollo's "unlimited" features sit under a fair use policy with no numeric cap published.

On compliance, Apollo says it is SOC 2 Type II and ISO 27001 certified and GDPR compliant (vendor claim, legitimate interest). That page makes no statement on Do Not Call lists, so screen phone numbers yourself. For wider comparisons see the best Apollo alternatives.

Best for: small SDR teams that want technology filters, contacts and sequencing together. Not ideal for: analysts who need deep technology coverage or technology change history.

3. ZoomInfo: technology coverage on a large contact database

ZoomInfo's own blog says its technographic coverage spans 30,000+ technologies across 200+ categories (vendor claim), and describes technographic-filtered audiences in its GTM Studio. Ask ZoomInfo how its technology data is collected before you rely on it for targeting.

Pricing is on request, based on features, licenses and credit usage, where one credit equals one export of a contact or company profile. Integrations need a minimum bulk credit purchase. Vendr reports a median of $33,500 a year, range $7,240 to $156,042 across 1,577 purchases (reported). A free ZoomInfo Lite tier exists for business email users, with a monthly credit allowance the vendor doesn't publish, and a free trial of the paid platform is offered. ZoomInfo's data page lists SOC 2 Type II, ISO 27001, ISO 27701, GDPR and CCPA badges. See the best ZoomInfo alternatives for the category.

Best for: sales teams that need technology filters and verified contacts under one contract. Not ideal for: buyers who only need domain-level technology lists or a published price.

4. Similarweb Sales Intelligence: tech data with traffic signals

SimilarTech used to be the standalone BuiltWith rival, but it's now "A Similarweb Company" and isn't sold on its own. The paid path is Similarweb Sales Intelligence, whose page says reps can target accounts with firmographic, technographic and other filters and enrich a CRM with firmographic, traffic and tech data. Its FAQ lists technology changes among the signals it turns into insights.

The page doesn't state a technology count, and pricing is on request. A free trial is offered, with no length stated. The page also quotes both 100M+ and 470 million contacts in different places, so ask which figure applies to your region.

Best for: teams that value website traffic and technology together, for example selling to ecommerce sites. Not ideal for: anyone wanting a priced, standalone technology database.

5. Leadfeeder: tech stack on identified companies

Dealfront became Leadfeeder on 24 March 2026, a brand change only, with contracts staying with the Dealfront entities. Its pricing page lists company profiles that include tech stack, and advanced filters to "filter by tech stack, intent topics, hiring signals, and contact role". Confirm which plan includes the advanced filters, and which technology categories are covered, before you buy on that basis.

Prices are in EUR and exclude VAT. Lite is free and shows the last 100 identified companies a month. Discover starts at EUR 79/mo billed annually (EUR 113 monthly). Activate starts at EUR 369/mo annually (EUR 527 monthly), and campaigns and CRM automations need Activate or above. Scale starts at EUR 599/mo, annual only. There's a 14-day trial, plan credits don't roll over at contract end, and add-on credits last 2 years.

This is a different shape from BuiltWith. Leadfeeder starts from companies that visited your site or fit your filters, then shows their tech stack, instead of starting from a technology and listing every site that uses it. See the best Leadfeeder alternatives for the category.

Best for: European B2B teams that want visitor identification with tech context. Not ideal for: building a list of every site on a given platform.

6. HG Insights: enterprise install base and technology spend

HG Insights sits at the other end of the market from an extension. Its pricing page lists Starter, Growth and Enterprise plans built on seats, Intelligence credits and leads processed, and the homepage says coverage runs to 70M+ companies (vendor claim). The standard term is two years, with one year at a higher price and quarterly billing at a premium, and there's no free trial. Credits are allocated annually and distributed monthly, with a maximum 20% monthly rollover.

Vendr reports a median of $90,000 a year (low $31,498, high $173,119, 46 purchases) (reported). HG Insights acquired TrustRadius, announced 19 June 2025.

Best for: enterprise strategy and sales-ops teams sizing a market by technology and spend. Not ideal for: small teams, or anyone who wants a pilot before committing.

7. 6sense: technographics as one signal inside an intent platform

6sense lists technographics as one input to a wider signal foundation, so it isn't a technology database you can buy alone. Pricing is on request across three packages (Sales Intelligence with data credits and predictive AI, with data credits only, or with predictive AI only). Credits unlock emails, phones and records. Vendr reports a median of $62,000 a year, low $11,183, high $176,213 across 387 purchases (reported). The pricing page shows no free plan.

If you're evaluating it mainly for technology filters, it's more platform than you need. See the best 6sense alternatives and our intent data guide for how intent and install data interact.

Best for: ABM teams that want tech fit and in-market behavior in one scoring model. Not ideal for: anyone who only needs a technology list.

8. Demandbase: account intelligence with an advertising layer

Demandbase sells a platform, and technology data is one part of an account profile. Its pricing page describes a platform fee plus a flat fee per user, with Advertising and Data sold as standalone products. Vendr reports a median of $68,591 a year, low $24,000, high $164,037 across 187 purchases (reported).

Best for: ABM teams that run advertising and sales plays off the same account list. Not ideal for: small teams buying technology data only.

9. Enlyft: install-base modeling for software and cloud sellers

Enlyft says it tracks 24,000+ technologies across 45M+ companies and 50+ first-party signals per account (vendor claims), modeled in-house in what it calls an Intelligence Graph. It's pitched at cloud, security and software vendors and channel teams selling against an installed product. Pricing isn't published and the call to action is a demo. It doesn't explain which sources feed the signals, so ask during evaluation.

Best for: vendors and channel teams that sell against or alongside a specific installed product. Not ideal for: buyers who need a published price or self-serve trial.

Replacements for developers and marketers: single-site lookups

If your use of BuiltWith is "what does this site run?", you probably don't need a paid plan at all. These tools handle that at no cost. For a fuller comparison of the free tier, see the best website technology checkers.

10. WhatRuns: a free extension for one-click lookups

WhatRuns calls itself a free browser extension that identifies technologies used on any website at the click of a button, claiming 450k+ active users (vendor claim). It says it surfaces web apps, CDNs, visitor tracking, WordPress plugins and fonts. The page lists no paid plans, offers only an "Add to Chrome" install, and doesn't describe how detection works.

Best for: developers and marketers checking a competitor's site in Chrome. Not ideal for: building lists, exporting data or non-Chrome browsers.

11. W3Techs: documented method for market-share research

W3Techs isn't a lead tool. It publishes technology usage statistics, and its FAQ says it searches pages for specific patterns, using regular expressions and DOM traversal, and infers dependencies (a WordPress site is assumed to run PHP). It visits each site roughly once a month, updates reports daily and generates larger market reports monthly. Its FAQ doesn't list paid lookup or subscription plans, so confirm any paid access with the vendor.

Best for: marketers and analysts who need market-share trends, such as which CMS is growing. Not ideal for: anyone who needs a list of accounts or contacts.

12. Netcraft: infrastructure and technology reports per site

Netcraft's Site Report says it helps you find out the infrastructure and technologies used by any site using results from its internet data mining. That leans toward hosting and infrastructure rather than marketing tags, which suits security-minded developers and IT teams more than sales. The page doesn't state whether use is free or gives a field list, so check the report itself and Netcraft's terms before relying on it.

Best for: developers and IT teams who want infrastructure context for a site. Not ideal for: list-building or contact data.

Reader-fit matrix

Credit models side by side

The practical difference is predictability. BuiltWith's flat fee is easy to budget and cheap per lead at volume. Metered tools get cheaper for light users and costlier for heavy ones, and phone numbers are where credit bills jump (8 Apollo credits per number against 1 for an email).

Stage-fit matrix

Sizing and persona table

Data accuracy and verification

A technology record can be wrong in four ways: the company switched vendor, the crawl missed a subdomain, the tag is loaded for a different purpose than you assume, or the contact attached to the record left. Employer tenure is a useful reminder: the median is 4.1 years, so assume people attached to old records move on. Salesforce's report adds that 46% of sales pros with agents say data quality issues hurt their sales.

W3Techs is the clearest about detection and publishes how it works. Most commercial vendors in this list don't describe their collection methods, so run a 50-record sample against sites you know before you commit.

Compliance: where the rules actually apply

A company's technology stack is business information gathered from public pages. The contact names, emails and phone numbers that come attached to it are personal data. That's where GDPR, Singapore's and Malaysia's PDPA regimes, and CCPA apply.

This isn't legal advice. The practical rule: free single-site lookups raise almost no privacy questions, and list tools that return contacts deserve the same scrutiny as any contact database. For phone numbers, screen against the relevant registries and get consent where your market requires it. For the rest of the workflow, see the best data enrichment tools and the best B2B data providers.

How to Choose: Decision Framework

Frequently Asked Questions

What to Do Next

Pick the two tools that match your reader type from the tables above and run both on the same 50 target accounts or 20 sites you already know well. Compare how many technologies each detects, how many records come back with a usable contact, and the cost per usable record. If a free extension answers your question, stop there. If you need lists, compare the result with BuiltWith's free lookups and plans before you commit to a term, and see how to choose sales intelligence software for the wider buying process. The sales intelligence hub lists the rest of the category.