Free tool · crates.io · no sign-up
How many real users does your crate have?
crates.io counts every download, including the mirrors, scanners and docs builds that grab each new release. Type a crate and see how much of its count came within 2 days of a release, and its quiet-day baseline: the closest public number to real use.
Method featured in This Week in Rust #674: 90 days of daily data from 69 crates. Runs in your browser on the public crates.io API; nothing is stored.
downloads in the last 90 days
arrived within 2 days of a release
quiet-day median per day (about a week)
releases in the window
within 2 days of a releasequiet day
Honest limits: quiet days still include CI pipelines and caches, so the baseline is an upper bound on people, not a head count. A crate with no release in 90 days has no release days to compare. Data: crates.io daily version downloads (last 90 days) and version publish dates.