Crates / wasmparser / Alternatives
Rust crate alternatives · data Oct 24, 2026
Alternatives to wasmparser
Short answerThe closest alternatives to wasmparser on crates.io data are wasi (2.2M real downloads a day), wasip2 (1.1M real downloads a day), wasip3 (500K real downloads a day). Of the 8 we list, the most used is winnow, and 6 shipped a release in the last year. wasmparser itself gets 1,023,280 a day with 431 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs wasmparser | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| wasi Pulled in | 2,177,567 | 2.13x | 58 | 13mo | keyword "wasm", keyword "webassembly" | compare |
| wasip2 Pulled in | 1,129,868 | 1.10x | 16 | 32d | keyword "wasm", keyword "webassembly" | compare |
| wasip3 Pulled in | 500,046 | 0.49x | 40 | 44d | keyword "wasm", keyword "webassembly" | compare |
| serde-wasm-bindgen Widely used | 191,519 | 0.19x | 1,141 | 2.7y | keyword "wasm", keyword "webassembly" | compare |
| winnow Established | 3,579,683 | 3.50x | 448 | 3mo | keyword "parser" | compare |
| clap Foundational | 3,139,218 | 3.07x | 49,450 | 40d | keyword "parser" | compare |
| clap_builder Pulled in | 2,755,258 | 2.69x | 26 | 40d | keyword "parser" | compare |
| clap_lex Pulled in | 2,652,105 | 2.59x | 35 | 40d | keyword "parser" | compare |
How to choose
- Same job, not the same API. Each line is listed because it shares a crates.io category or keyword with wasmparser; 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 wasmparser: 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 wasmparser, 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. 2,177,567 real downloads a day.wasiRust crate. WASI API bindings for Rust. Real use: 2.2M downloads a day on quiet days; 58 crates depend on it.Read it next →Also worth your time