OSSP sio is an I/O abstraction library for layered stream communication. It was built to deal efficiently with complex I/O protocols and includes capabilities to filter and multiplex data streams. Its modular structure is fully supported by the underlying OSSP al data buffer library.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.