Control.Pipe.C3 provides simple RPC-like wrappers for pipes. Control.Pipe.Serialize provides serialization and incremental deserialization pipes. Control.Pipe.Socket provides functions to setup pipes around sockets. System.Daemon provides a high-level interface to starting daemonized programs that are controlled through sockets. System.Posix.Daemon provides a low-level interface to starting, and controlling detached jobs. See the README.md file and the homepage for details.