Guardian is used at run time in 20 crates (of which 4 optionally). It is a direct run-time dependency in 5 crates. It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) Guardian version
4.6K 2 reactive_graph ^1.2
4.5K 1 reactive_stores ^1.2
1.5K 1 lsm-tree ^1.1.0
170 urcu2 ^1
190 key-mutex optional ^1.1.0