Some: https://www.jonathanturner.org/2018/07/snapshot-of-rust-popularity.html#rusts-commercial-users https://www.jonathanturner.org/2018/07/snapshot-of-rust-pop

Some: https://www.jonathanturner.org/2018/07/snapshot-of-rust-popularity.html#rusts-commercial-users https://www.jonathanturner.org/2018/07/snapshot-of-rust-popu... As far as "using it in a substantial portion of their product", dunno.