Crates / arrayvec / Alternatives
Rust crate alternatives · data Oct 24, 2026
Alternatives to arrayvec
Short answerThe closest alternatives to arrayvec on crates.io data are smallvec (3.9M real downloads a day), either (3M real downloads a day), fixedbitset (1.5M real downloads a day). Of the 8 we list, the most used is hashbrown, and 6 shipped a release in the last year. arrayvec itself gets 1,733,744 a day with 1,215 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs arrayvec | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| smallvec Widely used | 3,868,589 | 2.23x | 4,345 | 1d | category Data structures, keyword "no_std", keyword "stack" | side by side |
| either Widely used | 3,049,603 | 1.76x | 1,488 | 18d | category Data structures, category No standard library, keyword "data-structure", keyword "no_std" | side by side |
| fixedbitset Established | 1,507,079 | 0.87x | 199 | 2.5y | category Data structures, keyword "data-structure", keyword "no_std" | compare |
| ndarray Widely used | 354,525 | 0.20x | 2,985 | 9mo | category Data structures, keyword "array", keyword "data-structure" | side by side |
| nibble_vec Pulled in | 234,547 | 0.14x | 3 | 6.3y | category Data structures, keyword "data-structure", keyword "vector" | compare |
| psm Pulled in | 372,856 | 0.22x | 15 | 3mo | keyword "no_std", keyword "stack" | compare |
| hashbrown Widely used | 8,927,960 | 5.15x | 2,468 | 6mo | category Data structures, category No standard library, keyword "no_std" | compare |
| indexmap Widely used | 4,883,122 | 2.82x | 6,422 | 49d | category Data structures, category No standard library, keyword "no_std" | compare |
How to choose
- Same job, not the same API. Each line is listed because it shares a crates.io category or keyword with arrayvec; 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 arrayvec: 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 arrayvec, 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. 3,868,589 real downloads a day.smallvecRust crate. 'Small vector' optimization: store up to a small number of items on the stack. Real use: 3.9M downloads a day on quiet days; 4,345 crates depend on it.Read it next →Also worth your time