BuiltWith

“Technology profiling for websites offered a mixed bag—while querying technology lists was impressively fast and accurate, attempts to profile a standard e-commerce site and find competitive tech in the fintech sector were sluggish and frequently returned errors, highlighting a lack of reliability that detracts from its overall utility. With over half of my queries failing, the service feels more like a promising prototype than a robust solution for competitive intelligence in tech stacks.”

“BuiltWith's core tech detection works reliably for straightforward domain lookups, but half their API features failed or timed out in production, making it unreliable for automation — stick to it if you only need basic tech stacks, but don't bet on their competitive analysis or advanced filtering.”