Why it comes up: Infers tech stacks from job postings, which catches internal tools a website never shows, and adds the hiring signal itself, free to start and API from $49/mo.
Stands out: The depth of its job-posting archive: the vendor lists 225M postings back to 2021 across 195 countries and 352k sources, adds about 305k a day, and keeps closed jobs with the date each role went offline. Saved searches send daily or weekly email alerts or push to a webhook, so a desk hears the day a target company opens a role it places.
Watch out: It gives you the company and the posting, not the person: there are no emails or phone numbers for hiring managers, so you still need an enrichment tool to reach anyone. App credits and API credits are separate pools, and each app export is capped at 200 jobs per company.
Best for
- Agency recruiters building BD lists from companies hiring for the roles they place
- Desks that want a daily alert when target accounts post new jobs
- Teams feeding hiring signals into Claude, Clay or their own tools by API, webhook or MCP
Read the TheirStack write-up · BuiltWith vs TheirStack
Why it comes up: Technographics alongside job openings, funding and news on one record, pay as you go from $40/mo, better for signal-driven outreach than platform lists.
Stands out: Breadth of signals from one source: job openings with full descriptions and salary, news sorted into 37 event types such as expansions and leadership changes, financing rounds, technographics, products and customer relationships, all keyed to the same company record. You can follow a list of accounts and have new signals pushed to a webhook for 1 credit per company per month.
Watch out: It is data, not an app: there is no point-and-click search for recruiters, so you need an AI agent, n8n, Clay or code to use it. There are no contact details. Credits expire at the end of each month, and discovery calls bill per company returned, so one broad search can cost far more than one credit.
Best for
- Agencies building AI agents or n8n flows that watch client and target accounts for hiring and funding
- Recruiters using Claude or ChatGPT who want account research pulled on demand
- Teams that need several signal types under one API key
Read the PredictLeads write-up · BuiltWith vs PredictLeads
$49/mo Free tier Free trial MCP API
Why it comes up: Contacts and emails with technology filters, free to start, if you need the decision-maker as well as the company.
Stands out: A large people database plus email sequences in one login, with MCP and a Chrome extension.
Watch out: Data quality varies by segment, and it does not match enterprise tools for intent data and org charts.
Best for
- Outbound recruiting and sales on one database
- Teams that want free-tier access to start
- Desks that need sequences next to the data
4.5 on Capterra from 398 reviews
Read the Apollo write-up · BuiltWith vs Apollo
