The subdirectories in this directory contain either copies or Conan recipes
of external libraries used by rippled.
The Conan recipes include patches we have not yet pushed upstream.

| Folder          | Upstream                                     | Description |
|:----------------|:---------------------------------------------|:------------|
| `ed25519-donna` | [Project](https://github.com/floodyberry/ed25519-donna) | [Ed25519](http://ed25519.cr.yp.to/) digital signatures |
| `rocksdb`       | [Recipe](https://github.com/conan-io/conan-center-index/tree/master/recipes/rocksdb) | Fast key/value database. (Supports rotational disks better than NuDB.) |
| `secp256k1`     | [Project](https://github.com/bitcoin-core/secp256k1)    | ECDSA digital signatures using the **secp256k1** curve |
| `snappy`        | [Recipe](https://github.com/conan-io/conan-center-index/tree/master/recipes/snappy)  | "Snappy" lossless compression algorithm. |
| `soci`          | [Recipe](https://github.com/conan-io/conan-center-index/tree/master/recipes/soci)    | Abstraction layer for database access. |