sppark is used at run time in 41 crates (of which 29 optionally). It is a direct run-time dependency in 10 crates. It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) sppark version
7.2K 1 risc0-circuit-recursion-sys optional ^0.1.10
7.2K 1 risc0-circuit-rv32im-sys optional ^0.1.10
7.0K 9 risc0-sys optional ^0.1.10
1.1K lurk-pasta-msm ~0.1.2
2.1K 1 risc0-circuit-keccak-sys optional ^0.1.10
430 3 pasta-msm ~0.1.2
280 1 snarkvm-algorithms-cuda ^0.1.5
1 supraseal-c2 ^0.1.5
grumpkin-msm ~0.1.2
350 1 risc0-circuit-rv32im-v2-sys optional ^0.1.10