Hey HN! I built StackWho (stackwho.com) because I kept running into the same problem: tools like BuiltWith and Wappalyzer are great for finding what tech a company uses, but they stop there. You still have to hunt down the right person to reach out to.

StackWho combines tech stack data with verified contacts. Like CEO, CTO, VP Engineering, Head of Sales including emails and LinkedIn profiles. You can filter by technology, industry, location, and company size, then export to CSV and drop it straight into your CRM.

Free to browse. No annual contracts. Happy to answer questions or hear feedback!