2026-08-01 crawl · observed, not inferred
Technology used by duffer.jp
23
technologies detected
Recent changes
Full detected stack
Everything detected on this domain in the latest monthly crawl, grouped by what it does. ↩ marks when we first observed it — no later than that date, not necessarily when they adopted it. Faded dates were seen in fewer than four crawls.
JavaScript libraries
Analytics
Ecommerce
Load balancers
JavaScript frameworks
Photo galleries
Tag managers
Affiliate programs
Miscellaneous
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