num_threads is used at run time in 1,673 crates (of which 1,672 optionally). It is a direct run-time dependency in 3 crates. It's used at build time in 180 crates (of which 180 optionally, ). It's used only as a dev dependency in 76 crates.

Depender (with downloads and own rev deps) num_threads version
8.3M 2844 time optional ^0.1.2
clia-time ^0.1.2
cargo-cleaner ^0.1.6