Best Wappalyzer Alternatives in 2026: 13 Tools for Lead Lists and Site Lookups

By Laurel · Updated Oct 22, 2026

The best Wappalyzer alternative depends on which half of Wappalyzer you were using. If you used the free extension to see what one site runs, WhatRuns, W3Techs, Netcraft and BuiltWith's free lookups do the same job at no cost. If you used the paid plans to build lead lists by installed technology, BuiltWith is the closest like-for-like, Apollo.io and ZoomInfo add contacts and sequencing, and HG Insights, 6sense and Demandbase are the enterprise options.

Wappalyzer is unusual because it serves both readers at once. A developer wants a click-and-see answer. A sales team wants "every company running Shopify, with an email address." Those are different purchases, and most roundups blur them. So 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 a flat fee), and what you need to think about on compliance. For the full category see the best technographic data providers, and for the free end see 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, 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.
• Wappalyzer describes its coverage as thousands of web technologies across millions of websites (vendor claim), while BuiltWith says it tracks 127,890 web technologies across 491.9 million domains (vendor claim).
• W3Techs says its detection uses regular expressions and DOM traversal, and that accuracy can't be 100% because sites can hide their technologies.
• 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.

Why teams look past Wappalyzer

Wappalyzer is a good tool. The free extension is one of the most installed in the category, and the paid plans are cheaper than BuiltWith's entry price. The reasons teams move on are mostly about fit and limits, not quality.

Here is Wappalyzer's current pricing on its pricing page. Prices are shown monthly.

Annual billing saves 17% according to Wappalyzer, but annual prices aren't shown, so ask the vendor for the figure. Plan API credits expire after 60 days, one credit covers roughly one website, you can cancel at any time, and plans can be paused for up to 3 months.

None of this makes Wappalyzer the wrong choice. If you look up a few sites a week, the free extension and free account are hard to beat. If you build lists every week, one of the tools below may fit your workflow better.

Two readers, two jobs

If you're in the first two rows, you probably don't need to pay for anything. If you're in the third or fourth, the rest of this page is about which paid tool fits.

Quick Comparison Table

Replacements for sales and RevOps: lists by installed technology

These tools answer "which companies run X, and who do I contact?" They replace the paid, list-building side of Wappalyzer.

1. BuiltWith: the closest like-for-like, at a flat price

BuiltWith is the nearest direct replacement because it also does both jobs. Individual site lookups are free to use forever, according to the vendor, and it publishes free browser extensions for Chrome, Firefox and Edge. The paid side is built for lists. The vendor says it tracks 127,890 web technologies across 491.9 million domains, with history going back 41 years (vendor claims), which gives you a hard number where Wappalyzer gives a description. For the full head-to-head, see Wappalyzer vs BuiltWith.

Pricing is flat per account rather than metered. Basic is $295/mo or $2,950/yr with 2 technologies, 2 keywords and 1 login. Pro is $495/mo or $4,950/yr with unlimited technologies and keywords. Team is $995/mo or $9,950/yr with unlimited Pro logins. Annual billing is cheaper than monthly, and the minimum term is one month on monthly plans and one year on annual plans. Larger Team Ultra options exist, so confirm those figures with BuiltWith.

The trade is clear. Wappalyzer Pro at $250/mo is cheaper than BuiltWith Basic at $295/mo, but the two plans aren't equal. BuiltWith's flat fee doesn't count lookups, so a heavy list builder pays the same for 50 leads or 5,000. For the full replacement list, see the best BuiltWith alternatives.

Best for: teams building lists from installed technology every week, and marketers who want technology history. Not ideal for: anyone who only needs a few lookups a month.

2. Apollo.io: technology 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, and its data page claims 240M+ contacts and 30M+ companies (vendor claim).

Plans are per seat. Free is $0 with 900 credits per seat a year, granted at 75 a month. 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. An email costs 1 credit and a phone number 8. Credits are pooled across the team and don't roll over. Apollo's "unlimited" features sit under a fair use policy with no numeric cap published.

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 options 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 coverage spans 30,000+ technologies across 200+ categories (vendor claim), and it describes technographic-filtered audiences. That page describes industry collection methods in general, so ask ZoomInfo how its own technology data is collected before you build targeting on it.

Pricing is on request, by features, licenses and credit usage, where one credit equals one export of a contact or company profile. 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 trial of the paid platform is offered. Its 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. HG Insights: enterprise install base and technology spend

HG Insights sits at the other end of the market from a browser 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. Seat bundles come in 5, 10, 25 and 50, with 50 on Growth only.

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.

5. Similarweb Sales Intelligence: technology with traffic signals

SimilarTech used to be the standalone rival to Wappalyzer and BuiltWith, but its site now reads "A Similarweb Company" and it isn't sold on its own. If you land here from an old SimilarTech link, the paid path is Similarweb Sales Intelligence. Similarweb says the product blends contributory network signals, direct site measurement, panel analytics and public sources, lets reps filter accounts by technographic data and tracks technology changes.

Confirm technology coverage with Similarweb directly. Pricing is on request. A free trial is offered. Its free technology checker shows usage and market share for a given technology, which answers "who uses this tool?" more than "what does this site run?"

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

6. 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 for the category.

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.

7. 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 and no separate Sales or Marketing split. 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.

8. TheirStack: technology from job posts, with public credit pricing

TheirStack takes a different route to technographics. Instead of reading a site's scripts, it infers technology from job postings, so it surfaces tools a company is hiring for, including back-office software that never touches a public page. Its pricing page lists 352k job sources across 195 countries, and its datasets include 225M job records and 51M technographics records (vendor claims).

It's also one of the clearest on price. App company credits are one-time packs, from 1,000 credits for $109 up to 200,000 for $999. One credit unlocks a company's jobs, tech stack and firmographics, viewable for 90 days. API plans run monthly from $49 for 1,500 credits to $5,500 for 5,000,000, with a 10% discount against buying packs. Unused credits roll over for 12 months. Annual prices aren't listed.

The catch is what a job post proves. A posting for a Salesforce admin shows the company runs, or plans to run, Salesforce. It doesn't prove the tool is in production, and a company that never mentions a tool in a posting won't show up.

Best for: technical founders, growth engineers and data teams who want API access. Not ideal for: teams that need every installed tool, including those no job post mentions.

9. Hunter TechLookup: a technology list that feeds email search

Hunter is best known as an email finder, but TechLookup works in the opposite direction from a single-site checker. According to Hunter's help center, you pick a technology, click "Reveal the websites," and Hunter opens a Discover search with the Technology filter applied. Browsing the catalog of tracked technologies needs no account, but finding companies by technology needs a paid plan and isn't available on the free plan.

Hunter's pricing is flat per account with unlimited users on all plans. Free is $0 with 50 credits a month. Starter is $49/mo or $34/mo billed $408/yr, with 2,000 credits a month. Growth is $149/mo or $104/mo billed $1,248/yr, with 10,000 credits a month. Scale is $299/mo or $209/mo billed $2,508/yr, with 25,000 credits a month. An email found costs 1 credit and an email verified costs 0.5. Monthly credits reset with no rollover, while annual plans receive all credits upfront. Hunter states GDPR and CCPA compliance. See the best Hunter alternatives and the best email finder tools for how credit models compare.

Best for: sales teams that want a technology filter joined directly to email finding. Not ideal for: anyone who needs a free checker for one URL.

Replacements for developers and marketers: single-site lookups

If your use of Wappalyzer is "what does this site run?", you rarely need a paid plan. For a fuller comparison of the free tier, see the best website technology checkers.

10. WhatRuns: the zero-friction extension

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, and it lets you follow a site and get notified when it starts or stops using a technology. The page offers an "Add to Chrome" button only, so confirm availability on other browsers before rolling it out to a team.

It lists no paid plans, no export and no API. That suits a casual reader and leaves a gap for anyone who wants to move from one site to a list. Wappalyzer's extension covers Chrome, Firefox, Edge and Safari, so WhatRuns is the narrower of the two.

Best for: developers and marketers checking a competitor's site in Chrome. Not ideal for: list building, exports or API workflows.

11. WhatCMS: CMS detection with a public API price list

WhatCMS focuses on one question, which content management system a site uses, and it has widened to other technologies. It says it detects over 1,200 CMS and website-powering technologies (vendor claim) and links to sister tools for hosting providers, WordPress themes and Shopify themes.

Its API page is one of the clearest in the category. The free plan allows 500 detections, with the API limited to 1 URL per 10 seconds and no batch processing or private detections. Paid plans start at $20 a month for 10,000 detections, $40 for 20,000, $80 for 50,000 and $150 for 100,000, up to $800 a month for 1,000,000 detections. Prices are monthly. Upgrades and downgrades are prorated, and paid plans include an ad-free interface.

Compared with Wappalyzer's metered plans, WhatCMS is the cheaper route when your script only needs the CMS name. Wappalyzer's Pro plan is $250/mo for 5,000 technology lookups across every technology category, while WhatCMS gives 10,000 CMS detections for $20/mo.

Best for: developers, agencies and freelancers who need CMS detection inside a script. Not ideal for: marketing-stack analysis beyond the CMS.

12. W3Techs: documented method for market-share research

W3Techs is better known for market-share reports, but its Site Info tool lets you enter a URL and see the CMS, programming language, web server and hosting provider, among other items. The same page offers a bookmarklet, Chrome and Firefox extensions and a Site Info API.

What makes it useful is the method. The FAQ explains the pattern matching, the dependencies it infers (a WordPress site is assumed to run PHP), the monthly revisit cycle, and the fact that low-usage technologies can produce unreliable statistics. That's more candor than most vendors offer, and it's the reason to use W3Techs as a second opinion when two tools disagree. The lookup page doesn't state a price or usage cap, so confirm commercial or high-volume use through its API documentation.

Best for: analysts and technically minded marketers who want to understand how a result was produced. Not ideal for: lists of accounts or contacts, which it doesn't provide.

13. Netcraft: infrastructure and hosting first

Netcraft's Site Report shows the infrastructure and technologies used by any site, based on its internet data mining, and its free browser extension displays site technology and hosting provider alongside anti-phishing protection. The extension is listed for Chrome, Firefox and Edge and gives a risk rating for sites Netcraft hasn't seen before.

That security focus is the difference from Wappalyzer. Netcraft is the tool you'd open to ask where a site is hosted and whether it looks risky, not which email platform the marketing team picked. Netcraft says use of its site is subject to its Fair Use and Copyright policies, so read those before building a workflow on it.

Best for: security, IT and procurement reviewers, and developers who need hosting context. Not ideal for: marketing-stack research or list building.

Also considered

Two names appear in older lists. Datanyze began as technographic prospecting, but today its product is a contact-reveal Chrome extension, owned by ZoomInfo since 2018. On its pricing page, Nyze Lite is a 90-day trial at 10 credits a month, and paid plans are per user at $29/mo billed monthly (80 credits) or $21/mo billed yearly, and $55/mo monthly (160 credits) or $39/mo yearly. It reveals contacts, not technologies. Enlyft says it tracks 24,000+ technologies across 45M+ companies (vendor claim) and sells by demo with no published price, which suits cloud and software vendors selling against an installed product.

Reader-fit matrix

Credit models side by side

Metering changes who wins on price. Wappalyzer and WhatCMS charge by use, which is cheap for light users and costlier for heavy ones. BuiltWith charges a flat fee, which is easy to budget and cheap per lead at volume. Contact data is where bills jump, because phone numbers cost several times what an email does (8 Apollo credits per number against 1 for an email).

Stage-fit matrix

Sizing and persona table

Data accuracy and detection limits

Nearly every tool above except TheirStack, HG Insights and the model-based vendors works the same way: it reads what a public page exposes and matches it against known fingerprints. That explains the shared blind spots.

W3Techs is the clearest about this. It says accuracy can't be 100% because sites can hide their technologies, and that it visits sites about once a month. Job-post tools such as TheirStack and model-based vendors such as HG Insights cover tools that leave no web trace, but their records are inferred. A record can also be wrong because the company switched vendor, a crawl missed a subdomain, or the contact attached to it left. Salesforce's report adds that 46% of sales pros with agents say data quality issues hurt their sales.

The practical test is cheap. Run any shortlisted tool against 20 sites whose stack you already know, including a few with a tag manager, and count the misses before you pay for a year.

Compliance: where the rules actually apply

A company's technology stack is business information gathered from public pages, and checking one site's code is ordinary research. The contact names, emails and phone numbers that come attached are personal data. That's where GDPR, the PDPA regimes in Singapore and Malaysia, and CCPA apply.

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

How to Choose: Decision Framework

Frequently Asked Questions

What to Do Next

Decide which reader you are first. If you look up sites, install two free tools (for example WhatRuns and Wappalyzer's extension) and run them on five sites you know well, then check any disagreement in your browser's DevTools or W3Techs. If you build lists, pull the same technology list from two tools, such as Wappalyzer Pro and BuiltWith or Apollo, and compare how many records come back with a usable contact and the cost per record. See how to choose sales intelligence software for the wider buying process, the best BuiltWith alternatives for the mirror-image comparison, and the sales intelligence hub for the rest of the category.