The best BuiltWith alternatives in 2026. For when the website isn't the whole story.
We compared the best BuiltWith alternatives on what they can see, how early they catch a switch, contacts and price.
The best BuiltWith alternative for sales teams is Incumbently, because it finds back-end tools that never show in page code and tells you when a company is switching. Wappalyzer is the closest like-for-like option for front-end lookups. TheirStack covers job posts well, and PredictLeads sells raw data feeds for developers.
- Best overall: Incumbently, sales teams selling against a competitor
- Good for: Wappalyzer, quick checks of one website in the browser
- Good for: TheirStack, low-cost job-post data and a jobs API
Why teams look past BuiltWith.
Tools that run behind the website rarely show up in a crawl.
Independent reviews say the long tail is re-checked about once a quarter.
Job posts and new hires are often the first sign of a switch.
The Basic plan tracks 2 technologies.
5 BuiltWith alternatives, ranked.
- 1
Incumbently
Best for: Sales teams selling against a competitorAgents watch DNS records, subdomains, certificate logs, website code, job posts, new hires and press for 1,500+ software products. Every signal is dated. Ask in Claude, ChatGPT or Cursor through MCP, or use the dashboard, alerts and API.
- How it detects
- Infrastructure, job posts, new hires, news and 75+ other signals
- Price
- Free plan with a monthly report. Pro $149/mo (3 tracked tools). Max $249/mo (10). Enterprise custom.
- Sees back-end tools and hiring intent
- Switch alerts that say what changed
- Buyer contacts and MCP access included
- Tracks 1,500+ business software products, not every website widget
WebDNSCertsJobsHiresNewsSwitchContactsMCPAlertsWhich companies using Datadog look like they're moving to Grafana?Incumbently · find_switching_accountsincumbent: Datadog · challenger: Grafana · last 30 daysI found 18 accounts with switch signals in the last 30 days. Here are the strongest five, each with the signals behind it:
CompanySignalsSwitch scoreFirst signalCorvid LabsJobs8710d agoJuniper PayJobsCertDNS7912d agoTidewater FreightJobsHire7426d agoHalcyon HealthJobsCertDNS6216d agoSaltbox RetailCertDNS5226d ago46 sources · open any row to see the DNS record, certificate or job post
Ask a follow-up…Illustrative · asked in an AI assistant with the Incumbently MCP server connected - 2
Wappalyzer
Best for: Quick checks of one website in the browserWappalyzer is best known for its browser extension, used by about 3 million people, which shows the front-end technologies of the site you're on. Paid plans add lead lists, lookups and an API.
- How it detects
- Website crawling and a browser extension
- Price
- $250, $450 or $850+ per month. Plan credits expire after 60 days.
- Free, popular browser extension
- Simple single-site lookups
- Front-end only
- Credits expire after 60 days
- No AI or MCP features listed
Web - 3
TheirStack
Best for: Low-cost job-post data and a jobs APITheirStack reads job posts from hundreds of thousands of sources and infers which technologies companies use, with a confidence level and links to the jobs. It has a free plan, a cheap API, webhooks and an MCP server. Its docs say it does not infer when a company stops using a tool.
- How it detects
- Job postings only
- Price
- Free plan. API from $49/mo. App packs $109–$999 one-time.
- Large job-post dataset
- Low entry price and a free plan
- Webhooks and MCP server
- Job posts only, no infrastructure proof
- No removal detection
- No people or contact data
JobsMCPAlerts - 4
PredictLeads
Best for: Developers who want raw signal feedsPredictLeads sells company signal datasets through an API: technology detections from job posts, website scripts and DNS, plus job openings and news events, each with first and last-seen dates and evidence references.
- How it detects
- Job posts, website scripts, DNS records and review sites
- Price
- Credits from $0.002 to $0.04 each, $40/mo minimum.
- Several detection sources with evidence
- Cheap per-record pricing
- A data feed, not a product for sellers
- No alerts or analysis built for sales
WebJobsNewsMCP - 5
HG Insights
Best for: Enterprise teams with a large data budgetHG Insights sells enterprise technographics, IT spend estimates and modeled contract and renewal data, mostly on annual contracts. It runs an MCP server and has an agent builder in early access.
- How it detects
- Large document corpus, IT spend and contract models
- Price
- Custom. Median contract around $86,000 a year (Vendr data).
- Broad enterprise coverage
- IT spend and contract estimates
- Enterprise pricing and long sales cycles
- Renewal dates are modeled, not observed
MCP
All five, feature by feature.
Who sees a switch first.
Each tool can only see the steps its data sources cover. Here is the same typical switch through each one.
Five questions to ask. Before you sign anything.
Run these against any BuiltWith alternative, including us.
- Can it see back-end tools, not just website tags?
- Does every signal have a date?
- Does it tell you when a company stops using a tool?
- Can you use it from Claude, ChatGPT or Cursor?
- Are contacts included, or do you need another tool?
BuiltWith alternatives, answered.
TheirStack has a free plan and an API from $49 a month, but it only reads job posts. Incumbently has a free plan too, with Pro at $149 a month.
Incumbently reads infrastructure records like DNS, subdomains and certificate logs, plus job posts, new hires and contacts. PredictLeads also reads DNS records, but sells raw data feeds rather than alerts.
- Wappalyzer pricing
- Wappalyzer on the Chrome Web Store
- TheirStack pricing
- TheirStack: how we source tech stack data
- PredictLeads
- HG Insights on Vendr
- HG contracts skill (on tenure-based renewal estimates)
BuiltWith is a trademark of its owner. We compare products using public pricing and documentation. Features and prices change. If something here is out of date, email us and we will fix it.
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