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wasi

v0.14.7+wasi-0.2.4 Growing

WASI API bindings for Rust

Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT Edition 2021 MSRV 1.82.0
No standard libraryWebAssembly #wasm#webassembly

Quick Verdict

  • !Pre-1.0: API may have breaking changes
  • โœ“Trusted by 607 crates
  • โœ“Tiny footprint (18KB, 1 deps)
  • โœ“Permissive license (Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT)

Security

Checking security advisories...
Downloads
480.7M
Dependents
607
Releases
27
Size
18KB

Deep Insights

๐Ÿ“Š
Steady growth

37.8M downloads in the last 30 days (1.3M/day), up 7% from the previous period.

๐Ÿ”—
Moderate adoption

607 crates depend on wasi. Reasonable ecosystem adoption, though not yet a core dependency.

๐Ÿ‘ค
Prolific maintainer

The primary maintainer publishes 129 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

๐Ÿ”ฌ
Pre-1.0 for over a year

Despite being 7+ years old, wasi hasn't reached 1.0 yet. Expect potential API changes between versions.

๐Ÿชถ
Minimal dependencies

Only 1 direct dependencies. Lean dependency tree means faster builds and lower supply chain risk.

๐Ÿ“
Compact crate

At 18KB, wasi is lightweight. Small crate size correlates with focused, well-scoped functionality.

๐ŸŒŸ
Used by top crates

Notable dependents include mio, quanta, wasite, coarsetime, c2pa. When high-quality crates choose wasi, it's a strong quality signal.

Health Breakdown

Maintenance 10/25

Recency, release consistency, active ratio

Quality 16/25

Yanked ratio, deps, size, maturity, features

Community 15/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 15/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
1.1M/day avg+29%
0500K1.0M1.5M12/301/172/42/223/123/29

Top Dependents

Version Adoption

v0.11.0+wasi-snapshot-preview1
40%
v0.11.1+wasi-snapshot-preview1
21%
v0.9.0+wasi-snapshot-preview1
20%
v0.14.2+wasi-0.2.4
11%
v0.10.2+wasi-snapshot-preview1
8%

Release Timeline

27 releases1 yankedsince 2019
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2019
7
2020
1
2021
2
2022
2
2023
2024
6
2025
9
2026
Less
More|
Yanked

Feature Flags

default =["wasip2/default"]

stdbitflags

README

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Maintainers

Dependencies
1
direct dependencies
Dependents
607
crates depend on wasi

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