Crates / crc32fast / Alternatives
Rust crate alternatives · data Oct 24, 2026
Alternatives to crc32fast
Short answerThe closest alternatives to crc32fast on crates.io data are crc (931K real downloads a day), crc32c (210K real downloads a day), foldhash (3M real downloads a day). Of the 8 we list, the most used is foldhash, and 4 shipped a release in the last year. crc32fast itself gets 2,229,287 a day with 1,440 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs crc32fast | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| crc Established | 930,857 | 0.42x | 601 | 11mo | category Algorithms, category No standard library, keyword "crc", keyword "crc32" | side by side |
| crc32c Established | 209,580 | 0.09x | 345 | 2.4y | category Algorithms, keyword "crc", keyword "simd" | side by side |
| foldhash Established | 3,043,165 | 1.37x | 333 | 14mo | category Algorithms, category No standard library, keyword "hash" | compare |
| fastrand Widely used | 2,895,139 | 1.30x | 1,809 | 3mo | category Algorithms, keyword "fast" | compare |
| adler2 Pulled in | 1,994,630 | 0.89x | 18 | 17mo | category Algorithms, keyword "hash" | compare |
| ahash Widely used | 1,968,676 | 0.88x | 2,097 | 18mo | category Algorithms, category No standard library, keyword "hash" | compare |
| siphasher Established | 1,957,258 | 0.88x | 274 | 29d | category Algorithms, keyword "hash" | compare |
| simd-adler32 Pulled in | 1,931,920 | 0.87x | 26 | 3mo | category Algorithms, category No standard library, keyword "simd" | compare |
How to choose
- Same job, not the same API. Each line is listed because it shares a crates.io category or keyword with crc32fast; 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 crc32fast: 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 crc32fast, 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: Established and steady. 930,857 real downloads a day.crcRust crate. Rust implementation of CRC with support of various standards. Real use: 931K downloads a day on quiet days; 601 crates depend on it.Read it next →Also worth your time