libz-ng-sys is used at run time in 105 crates (of which 44 optionally). It is a direct run-time dependency in 4 crates. It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) libz-ng-sys version
8.0M 2082 flate2 optional ^1.1.16
550 physis ^1.1
1 compu optional ^1.1.9
flate2-expose optional ^1.1.8