async-attributes is used at run time in 725 crates (of which 177 optionally). It is a direct run-time dependency in 2 crates. It's used only as a dev dependency in 598 crates (of which 7 directly).

Depender (with downloads and own rev deps) async-attributes version
1.5M 1825 async-std optional ^1.1.2
55K 13 suppaftp dev ^1.1.2
45K 19 cacache dev ^1.1.2
43K 6 http-cache dev ^1.1.2
3.8K 1 demonstrate dev ^1.1
sqlx-pg-migrate dev ^1.1
to-socket-addrs dev ^1.1.2
1 samotop-delivery dev ^1.1
amaurymartiny-async-smtp dev ^1.1.1