Ask HN: Decent Builtwith alternative for finding leads?

Is there a cost-friendly Builtwith alternative that lets me find businesses that use a specific tech product? I find Builtwith a bit too expensive for my needs as it's $299 for 2 technologies, and I have 10+ I want find businesses for. And BuiltWith doesn't seem to have a lot of technologies I'm looking for either. I've tried Wappalyzer too, and though it's much less expensive, it also doesn't have data for a lot of niche technologies I'm targeting either.

For context, I own my own tech consulting business and want to find businesses that are trying to seriously start/expand an engineering team. I've already exhausted asking my network, existing clients, etc, and thinking of expanding now into more outbound stuff.

I was thinking of finding businesses that started using a particular Javascript framework or started using a "starter-level" devops product like BitBucket, as a way to find those businesses that are just beginning to scale their dev team

Are there any good alternatives out there? It feels like the type of tool that the HN crowd would be building...