leveldb-sys is used at run time in 25 crates (of which 4 optionally). It is a direct run-time dependency in 6 crates. It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) leveldb-sys version
42K 16 leveldb ^2.0.0
1.7K rs-leveldb ^2.0.0
1 hala-leveldb ^2.0.9
1 leveldb-rs ^2.0.1
exonum_leveldb ^2.0.1
leveldb_minimal ^2.0.0