num_threads is used at run time in 1,894 crates (of which 1,890 optionally). It is a direct run-time dependency in 6 crates. It's used at build time in 348 crates (of which 348 optionally, ). It's used only as a dev dependency in 116 crates.

Depender (with downloads and own rev deps) num_threads version
13.0M 3369 time optional ^0.1.2
1.1K 8 env ^0.1.7
page-primer ^0.1.7
cargo-cleaner ^0.1.7
clia-time ^0.1.2
supply-chain-trust-example-crate-000040 optional ^0.1.2