libmimalloc-sys is used at run time in 216 crates (of which 60 optionally). It is a direct run-time dependency in 8 crates. It's used only as a dev dependency in 55 crates.

Depender (with downloads and own rev deps) libmimalloc-sys version
463K 214 mimalloc ^0.1.39
135K 8 parity-util-mem optional ^0.1.14
13K pyembed optional ^0.1.28
900 2 difftastic =0.1.24
1.8K 30 tetsy-util-mem optional ^0.1.14
110 baz-difftastic =0.1.24
1 difftastic-lib =0.1.24
mimalloc2 ^0.1