2026-08-01 crawl · observed, not inferred
Technology used by duolingo.com
Learn languages by playing a game. It's 100% free, fun, and scientifically proven to work.
28
technologies detected
duolingo
company
501-1000
employees
higher education
industry
united states
location
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
Issue trackers
JavaScript frameworks
Authentication
Reverse proxies
Load balancers
Payment processors
Marketing automation
Security
Cookie compliance
Email
Tag managers
Who else runs this stack?
Build a list of companies using any of these, filtered by size, industry and country — with every prospect's full stack attached.
Build a list →