Rust crate owner · data Oct 24, 2026
simlay: Rust crates and real downloads
Every crate simlay can publish on crates.io, among the top 1000. simlay on GitHub · on crates.io
Short answersimlay (crates.io simlay) owns 5 of the 1000 most-downloaded Rust crates. Together they get about 2,691,518 real downloads a day on quiet days (release-day spikes removed), rank #126 of the 492 owners we track. The biggest is objc2 at 607,001 a day with 1,193 crates depending on it. 1 shipped a release in the last 90 days; 3 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 |
|---|---|---|---|---|---|
| objc2 Widely used | 607,001 | 1,193 | +10% | 19d | #743 |
| objc2-core-foundation Established | 539,144 | 422 | +11% | 13mo | #891 |
| block2 Established | 538,869 | 530 | +6% | 13mo | #806 |
| objc2-foundation Widely used | 520,494 | 1,007 | +14% | 13mo | #881 |
| objc2-encode Pulled in | 486,010 | 1 | +7% | 21mo | #843 |
Mostly in: macOS APIs (5), FFI (5), API bindings (4), External FFI bindings (4), Encoding (1).
Shares crates with
Check any crates.io account
This page covers crates in the top 1000. For every crate an account owns, live, use Check your crates.
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.
Up next
The next owner by real downloads: 2 top crates, about 2,647,211 real downloads a day.zestererRead it next →Also worth your time