CedaryCat 

a efficient terraria packet serializer.

On the basis of OTAPI, by pulling out the common types to achieve friendly compatibility with the protocol library

An additional IL patch layered on top of OTAPI, enabling multiple Terraria server instances to run concurrently within a single process.

An experiment-friendly Terraria server launcher based on OTAPI USP, hosting multiple worlds in a single process with per-instance consoles, a release assistant, and plugin scaffolding