Assimp is used at run time in 5 crates (of which 3 optionally). It is a direct run-time dependency in 3 crates. It's used only as a dev dependency in 2 crates.

Depender (with downloads and own rev deps) Assimp version
1.2K 3 urdf-viz optional ^0.3.1
160 3 openrr-planner optional ^0.3
gear optional ^0.3
1.2K 4 mesh-loader dev ^0.3
2 grr dev ^0.3