ole32-sys is used at run time in 88 crates (of which 87 optionally). It is a direct run-time dependency in 6 crates. It's used only as a dev dependency in 7 crates.

Depender (with downloads and own rev deps) ole32-sys version
2.3K 7 appdirs ^0.2.0
2.0K cargo-script ^0.2.0
100 winfolder ^0.2.0
kitchensink ^0.2
1 libmaj ^0.2.0
cargo-scripter ^0.2.0