Job postings was another thing i was thinking of. U are right that it can be flawed and you gotta do a bit of discerning but if a company keeps mentioning the same stack in all their postings, it probably means they use it.
It would make my workflow so much more convenient. Instead of logging into an app every single time. Have you thought about building one? I imagine with ChatGPT you can just vibe code one these days!
Take a look at WhatRuns though if you are looking for a browser extension. It is also another decent alternative to Wappalyzer
I have tried WhatRuns and it is pretty bare bones. Not useful at all. Wappalyzer’s browser extension is free as well and much better data. It just is missing a lot of data on companies that use backend tools like ChatGPT and Claude, but so far Bloomberry has been pretty useful in that area.