Deflate64 is used at run time in 436 crates (of which 70 optionally). It is a direct run-time dependency in 3 crates. It's used at build time in 45 crates (of which 21 optionally, ). It's used only as a dev dependency in 15 crates.

Depender (with downloads and own rev deps) Deflate64 version
4.6M 1176 zip optional ^0.1.9
3.9M 191 async-compression optional ^0.1.5
40K 8 rc-zip optional ^0.1.7