Crates / num_threads / Alternatives
Rust crate alternatives · data Oct 24, 2026
Alternatives to num_threads
Short answerThe closest alternatives to num_threads on crates.io data are r-efi (2.1M real downloads a day), hostname (560K real downloads a day), gethostname (421K real downloads a day). Of the 8 we list, the most used is getrandom, and 6 shipped a release in the last year. num_threads itself gets 566,226 a day with 11 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs num_threads | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| r-efi Pulled in | 2,051,196 | 3.62x | 14 | 2mo | category Hardware support, category Operating systems | compare |
| hostname Established | 560,440 | 0.99x | 743 | 11mo | category API bindings, category Operating systems | compare |
| gethostname Established | 420,580 | 0.74x | 311 | 12mo | category API bindings, category Operating systems | compare |
| wasite Pulled in | 348,285 | 0.62x | 1 | 10mo | category API bindings, category Operating systems | compare |
| getrandom Widely used | 7,623,482 | 13.46x | 5,558 | 4mo | category Operating systems | compare |
| cpufeatures Pulled in | 4,097,423 | 7.24x | 81 | 59d | category Hardware support | compare |
| socket2 Widely used | 4,034,112 | 7.12x | 1,539 | 3mo | category API bindings | compare |
| errno Established | 2,791,762 | 4.93x | 259 | 13mo | category Operating systems | compare |
How to choose
- Same job, not the same API. Each line is listed because it shares a crates.io category or keyword with num_threads; 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 num_threads: 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 num_threads, 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: Few direct dependents and steady. 2,051,196 real downloads a day.r-efiRust crate. UEFI Reference Specification Protocol Constants and Definitions. Real use: 2.1M downloads a day on quiet days; 14 crates depend on it.Read it next →Also worth your time