ark-marlin is used at run time in 12 crates (of which 1 optionally). It is a direct run-time dependency in 6 crates. It's used only as a dev dependency in 2 crates.

Depender (with downloads and own rev deps) ark-marlin version
3 arkworks-gadgets ^0.3.0
arkworks-solidity-verifier ^0.3.0
1 arkworks-circuits ^0.3.0
voproof ^0.3.0
500 liminal-ark-relations optional ^0.3.0
arkworks-benchmarks ^0.3.0
140 2 arkworks-r1cs-gadgets dev ^0.3.0
1 arkworks-r1cs-circuits dev ^0.3.0