GSL

4.7K downloads in the last 30 days (155/day), up 12% from the previous period.

306 crates depend on GSL. Reasonable ecosystem adoption, though not yet a core dependency.

The primary maintainer publishes 117 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

The API has been stable (1.x) for over 11 years with 35 releases. This level of maturity means you can depend on it without worrying about breaking changes.

Only 2 direct dependencies. Lean dependency tree means faster builds and lower supply chain risk.

Notable dependents include light-curve-feature, varlociraptor, rust-bio-tools, ekore, libprosic. When high-quality crates choose GSL, it's a strong quality signal.