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Ask HN: Any Recommended Alternative to Wappalyzer?

1 points by Kuraptka ↗ HN
Is there a tool (open source preferably or inexpensive) that can show me the entire tech stack of a company?

Wappalyzer works great for finding what javascript or css frameworks a company uses (i used to depend on it a lot when i owned a web agency) but it doesnt do a good a job at detecting the infrastructure a company uses. Like if they use Grafana or Snowflake or ChatGPT APIs.

Has anyone here built such a tool before? Again, something preferably open source :)

2 comments

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AznHisoka
It doesn't fit your criteria of being open-source/free, but I built Bloomberry (bloomberry.com) as an alternative to Wappalyzer for exactly this use case. It analyzes DNS records, subprocessor lists, DNS traffic data to find the real technologies a company uses. So stuff like you mentioned like Snowflake, and even the enterprise LLMs like ChatGPT/Claude.

If you're looking for something truly free/open-source, you probably have to stitch together various sources. You can analyze job postings to see what technologies they mention on job ads (although this can give u some false postives too as companies love to spam long lists of technologies). You could look at what appears when they search for their domain in subdomain tools, which can often give you a clue if they host stuff like CI/CD internally. And just good old-fashioned snooping around the Linkedin profiles of engineers who work there.

Kuraptka
Thanks, I just signed up for Bloomberry and it definitely fits the bill on what I was looking for. Was even able to find companies that use chatgpt, which wappalyzer missed.

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.