Rust crate alternatives · data Oct 24, 2026
Alternatives to adler
Short answerThe closest alternatives to adler on crates.io data are adler2 (2M real downloads a day), md5 (484K real downloads a day), seahash (439K real downloads a day). Of the 8 we list, the most used is foldhash, and 3 shipped a release in the last year. adler itself gets 186,534 a day with 17 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs adler | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| adler2 Pulled in | 1,994,630 | 10.69x | 18 | 17mo | category Algorithms, keyword "adler32", keyword "checksum" | compare |
| md5 Widely used | 483,598 | 2.59x | 1,213 | 4mo | category Algorithms, keyword "checksum", keyword "hash" | compare |
| seahash Established | 438,807 | 2.35x | 202 | 5.8y | keyword "checksum", keyword "hash" | compare |
| adler32 Pulled in | 150,971 | 0.81x | 47 | 6.2y | keyword "adler32", keyword "hash" | compare |
| foldhash Established | 3,043,165 | 16.31x | 333 | 14mo | category Algorithms, keyword "hash" | compare |
| crc32fast Widely used | 2,229,287 | 11.95x | 1,440 | 4d | category Algorithms, keyword "hash" | compare |
| ahash Widely used | 1,968,676 | 10.55x | 2,097 | 18mo | category Algorithms, keyword "hash" | compare |
| siphasher Established | 1,957,258 | 10.49x | 274 | 29d | category Algorithms, keyword "hash" | compare |
How to choose
- Same job, not the same API. Each line is listed because it shares a crates.io category or keyword with adler; 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 adler: 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 adler, 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. 1,994,630 real downloads a day.adler2Rust crate. A simple clean-room implementation of the Adler-32 checksum. Real use: 2M downloads a day on quiet days; 18 crates depend on it.Read it next →Also worth your time