Guardian is used at run time in 14 crates (of which 3 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
4.7K 2 reactive_graph ^1.2
2.9K 1 reactive_stores ^1.2
1.6K 1 lsm-tree ^1.1.0
650 urcu2 ^1
key-mutex optional ^1.1.0