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libffi

v5.1.0 Stable

Rust bindings for libffi

MIT/Apache-2.0 Edition 2021 MSRV 1.78
Development tools::FFI #ffi#closure#c#libffi

Quick Verdict

  • Actively maintained (updated 86d ago)
  • Stable API (5.x for 9+ years)
  • Trusted by 513 crates
  • Tiny footprint (33KB, 3 deps)
  • Permissive license (MIT/Apache-2.0)

Security

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Downloads
2.4M
Dependents
513
Releases
46
Size
33KB

Deep Insights

📈
Strong growth momentum

181.2K downloads in the last 30 days (6.0K/day), up 47% from the previous period.

🔗
Moderate adoption

513 crates depend on libffi. Reasonable ecosystem adoption, though not yet a core dependency.

Stable for 9+ years

The API has been stable (1.x) for over 9 years with 46 releases. This level of maturity means you can depend on it without worrying about breaking changes.

🪶
Minimal dependencies

Only 3 direct dependencies. Lean dependency tree means faster builds and lower supply chain risk.

📐
Compact crate

At 33KB, libffi is lightweight. Small crate size correlates with focused, well-scoped functionality.

🌟
Used by top crates

Notable dependents include deno_ffi, scryer-prolog, mpi, uiua, vl-convert-rs. When high-quality crates choose libffi, it's a strong quality signal.

Health Breakdown

Maintenance 13/25

Recency, release consistency, active ratio

Quality 23/25

Yanked ratio, deps, size, maturity, features

Community 16/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 12/15

Docs, repo, license, metadata

Download Trend

Daily downloads · last 90 days
4K/day avg+118%
05K10K12/291/162/32/213/113/28

Top Dependents

Version Adoption

v3.2.0
64%
v3.0.1
10%
v5.1.0
10%
v4.1.1
10%
v4.1.2
6%

Release Timeline

46 releasessince 2016
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2016
20
2017
7
2018
2
2019
3
2020
1
2021
2
2022
3
2023
2
2024
2025
5
2026
1
Less
More

Feature Flags

default =["std"]

std*systemcomplexcheck_only

README

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Maintainers

Dependencies
3
direct dependencies
Dependents
513
crates depend on libffi

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