Empowering everyone to build reliable and efficient software.
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Crate
semver
Semantic versioning — parsing, comparison, and constraint matching.
What it is
semver parses and compares version strings following the Semantic Versioning 2.0.0 specification. It supports version comparison, sorting, and range constraints (^1.0, >=2.0 <3.0) as used in Cargo.toml dependency specifications.
Why it is commonly used
Used in build tools, package managers, update checkers, and any code that compares or resolves software versions. Cargo itself uses this crate for dependency resolution and version constraint evaluation.
635
Repositories
95%
Actively maintained
600
Updated ≤ 30 days
2.7M
Total stars
541
Owners
Counted from the Cargo.toml manifests of the 635 indexed repositories that declare semver as a dependency — not download counts. Dependency data last verified 2026-08-13.
Often used with
Crates that show up unusually often in semver projects. The most distinctive pairings rank first — crates these projects use far more than the average indexed Rust project does, not just crates that are popular everywhere. Each percentage is the share of semver projects that also use it.
cargo_metadata13.5%dunce10.7%toml_edit20%tar35.9%pretty_assertions13.9%similar13.7%heck11.5%insta13.9%which22.4%globset12.8%dialoguer13.7%indoc10.4%schemars26.6%zip30.2%serde_with19.4%clap_complete25%aws-config11.3%glob24.9%console12.6%walkdir35.4%ignore15.9%derive_more15.3%pulldown-cmark11.2%open12.1%
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