Rust crate alternatives · data Oct 24, 2026
Alternatives to scc
Short answerThe closest alternatives to scc on crates.io data are dashmap (1.1M real downloads a day), moka (528K real downloads a day), crossbeam-utils (2.7M real downloads a day). Of the 8 we list, the most used is crossbeam-utils, and 5 shipped a release in the last year. scc itself gets 240,754 a day with 133 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs scc | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| dashmap Widely used | 1,112,131 | 4.62x | 4,694 | 5mo | category Concurrency, category Data structures, keyword "concurrent", keyword "hashmap" | compare |
| moka Established | 527,705 | 2.19x | 743 | 2mo | category Caching, category Concurrency, keyword "cache", keyword "concurrent" | compare |
| crossbeam-utils Established | 2,696,777 | 11.20x | 605 | 49d | category Concurrency, category Data structures, keyword "cache" | compare |
| atomic-waker Established | 1,911,010 | 7.94x | 116 | 3.1y | category Asynchronous, category Concurrency, keyword "async" | compare |
| futures-lite Widely used | 763,457 | 3.17x | 1,109 | 15mo | category Asynchronous, category Concurrency, keyword "async" | compare |
| blocking Established | 466,293 | 1.94x | 179 | 2mo | category Asynchronous, category Concurrency, keyword "async" | compare |
| async-signal Pulled in | 369,929 | 1.54x | 21 | 7mo | category Asynchronous, category Concurrency, keyword "async" | compare |
| async-global-executor Pulled in | 160,070 | 0.66x | 72 | 20mo | category Asynchronous, category Concurrency, keyword "async" | compare |
How to choose
- Same job, not the same API. Each line is listed because it shares a crates.io category or keyword with scc; read its description before you swap.
- More dependents means more answered questions and a smaller chance it disappears.
- Check the last release against how fast you need fixes. For scc: is it still maintained?
Rules
Alternatives = tracked crates (top 1000 by downloads) that share a specific crates.io category (2 points each) or keyword (3 points each) with scc, most similar first; its own parts (same name prefix) and crates it depends on or that depend on it are left out, because those are companions, not substitutes. Real downloads = quiet-day median, crates.io data Oct 24, 2026. Built when we find 3 or more.
Up next
The closest alternative: Widely used and steady. 1,112,131 real downloads a day.dashmapRust crate. Blazing fast concurrent HashMap for Rust. Real use: 1.1M downloads a day on quiet days; 4,694 crates depend on it.Read it next →Also worth your time