Rust crate owner · data Oct 24, 2026
RReverser: Rust crates and real downloads
Every crate RReverser can publish on crates.io, among the top 1000. RReverser on GitHub · on crates.io
Short answerIngvar Stepanyan (crates.io RReverser) owns 7 of the 1000 most-downloaded Rust crates. Together they get about 10,070,974 real downloads a day on quiet days (release-day spikes removed), rank #34 of the 492 owners we track. The biggest is wasm-bindgen at 1,760,430 a day with 5,777 crates depending on it. 6 shipped a release in the last 90 days; 0 are gaining on the field and 0 losing ground.
Their crates, by real downloads
| Crate | Real downloads a day | Dependents | Trend vs field | Last release | crates.io rank |
|---|---|---|---|---|---|
| wasm-bindgen Widely used | 1,760,430 | 5,777 | -5% | 29d | #233 |
| wasm-bindgen-macro-support Pulled in | 1,759,877 | 8 | -5% | 29d | #234 |
| wasm-bindgen-macro Pulled in | 1,758,764 | 2 | -5% | 29d | #235 |
| wasm-bindgen-shared Pulled in | 1,758,741 | 7 | -5% | 29d | #237 |
| js-sys Widely used | 1,626,231 | 3,511 | -4% | 29d | #255 |
| web-sys Widely used | 1,215,412 | 3,566 | +2% | 29d | #318 |
| serde-wasm-bindgen Widely used | 191,519 | 1,141 | -2% | 2.7y | #999 |
Mostly in: WebAssembly (3), Encoding (1), FFI (1).
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How we count
Owners: crates.io owners API (users only; teams are not listed), fetched Oct 24, 2026. Real downloads a day = the median day with no release that day or the day before, per crate, summed. Trend = last 30 days against the first 30, read against the median tracked crate. Method: our crates.io study.
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