Crates / Category
Rust crates · category · data Oct 24, 2026
Asynchronous crates by real downloads
crates.io describes this category as: “Crates to help you deal with events independently of the main program flow, using techniques like futures, promises, waiting, or eventing.” Below are the 23 crates in it among the 300 most-downloaded crates, ranked by real downloads (quiet-day baseline) instead of raw count.
Short answerBy steady daily use, mio leads Asynchronous with 3,332,252 real downloads a day (established and steady). 12 of the 23 have 1,000+ dependents; 4 have shipped nothing in 2+ years. Release spikes barely matter here: the median crate got 0.0% of its downloads within 2 days of a release.
23 crates
| Compare | ||||||
|---|---|---|---|---|---|---|
| mioEstablished | 3,332,252 | 624 | 21d | -5% | 1.2B | |
| tokioFoundational | 3,098,313 | 78,796 | 3d | -6% | 1.1B | |
| tokio-macrosPulled in | 2,690,840 | 50 | 3mo | -2% | 903M | |
| tracing-coreEstablished | 2,617,281 | 386 | 10mo | +2% | 976M | |
| tracingFoundational | 2,611,879 | 46,220 | 10mo | +2% | 966M | |
| futuresFoundational | 2,405,900 | 26,505 | 2mo | -7% | 88M | |
| towerWidely used | 2,342,590 | 5,816 | 9mo | -2% | 766M | |
| tokio-rustlsWidely used | 2,299,591 | 2,458 | 26d | +5% | 871M | |
| h2Established | 2,290,495 | 296 | 18d | -1% | 911M | |
| tokio-utilWidely used | 2,287,578 | 8,109 | 15d | -1% | 881M | |
| tracing-attributesPulled in | 2,272,684 | 48 | 11mo | +3% | 846M | |
| tower-httpWidely used | 2,044,149 | 3,782 | 54d | +6% | 551M | |
| async-traitFoundational | 2,011,334 | 26,080 | 3mo | +0% | 751M | |
| tower-serviceEstablished | 1,972,046 | 833 | 2.2y | +3% | 728M | |
| tracing-subscriberFoundational | 1,919,774 | 20,192 | 7mo | -1% | 69M | |
| atomic-wakerEstablished | 1,911,010 | 116 | 3.1y | +8% | 562M | |
| tower-layerEstablished | 1,850,070 | 342 | 2.2y | +4% | 599M | |
| tracing-logEstablished | 1,664,731 | 476 | 3.0y | -5% | 619M | |
| axumWidely used | 1,587,646 | 9,968 | 6mo | -2% | 541M | |
| axum-coreEstablished | 1,571,431 | 191 | 10mo | -2% | 536M | |
| quick-xmlWidely used | 1,525,182 | 2,687 | 2mo | +10% | 493M | |
| event-listenerEstablished | 1,515,562 | 237 | 3mo | +2% | 599M | |
| tokio-streamWidely used | 1,460,484 | 5,136 | 3mo | +7% | 537M |
Click a column to sort; press + to add a crate to a comparison. Real / day = median downloads on days with no release that day or the day before. Each crate's page shows its verdict and the 4 rules behind it. Why this method · this category on crates.io