fast-float2 is used at run time in 160 crates (of which 33 optionally). It is a direct run-time dependency in 13 crates. It's used only as a dev dependency in 14 crates.

Depender (with downloads and own rev deps) fast-float2 version
547K 45 polars-arrow optional ^0.2.2
544K 23 polars-io optional ^0.2.2
53K 18 boa_engine ^0.2.3
52K 2 boa_parser ^0.2.3
50K 3 boa_string ^0.2.3
111K 10 polars-compute optional ^0.2.2
12K 5 jsonb ^0.2.3
2.2K 2 qsv-dateparser ^0.2
1.4K 2 graph_builder ^0.2.3
650 netlist-db ^0.2.3
600 qsv ^0.2
500 liberty-db ^0.2
280 3 databend-common-ast ^0.2.3