Crates / num-complex / Alternatives
Rust crate alternatives · data Oct 24, 2026
Alternatives to num-complex
Short answerThe closest alternatives to num-complex on crates.io data are number_prefix (280K real downloads a day), bigdecimal (366K real downloads a day), crossbeam-utils (2.7M real downloads a day). Of the 8 we list, the most used is crossbeam-utils, and 6 shipped a release in the last year. num-complex itself gets 1,201,013 a day with 1,140 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs num-complex | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| number_prefix Pulled in | 280,493 | 0.23x | 39 | 6.5y | category Algorithms, keyword "mathematics", keyword "numerics" | compare |
| bigdecimal Established | 365,613 | 0.30x | 588 | 26d | category Science, keyword "numerics" | compare |
| crossbeam-utils Established | 2,696,777 | 2.25x | 605 | 49d | category Algorithms, category Data structures | compare |
| ahash Widely used | 1,968,676 | 1.64x | 2,097 | 18mo | category Algorithms, category Data structures | compare |
| crossbeam-deque Established | 1,924,167 | 1.60x | 142 | 49d | category Algorithms, category Data structures | compare |
| crossbeam-channel Widely used | 1,564,625 | 1.30x | 2,767 | 49d | category Algorithms, category Data structures | compare |
| dashmap Widely used | 1,112,131 | 0.93x | 4,694 | 5mo | category Algorithms, category Data structures | compare |
| crypto-bigint Established | 937,488 | 0.78x | 167 | 1d | category Algorithms, category Data structures | 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-complex; 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-complex: 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-complex, 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 losing ground. 280,493 real downloads a day.number_prefixRust crate. Library for numeric prefixes (kilo, giga, kibi). Real use: 280K downloads a day on quiet days; 39 crates depend on it.Read it next →Also worth your time