The portable Universal Plug and Play (UPnP) SDK provides support for building UPnP-compliant control points, devices, and bridges on several operating systems.
The main repository is at GitHub in https://github.com/pupnp/pupnp. This is just a clone repository for legacy reasons.
Old SourceForge repo: git://pupnp.git.sourceforge.net/gitroot/pupnp/pupnp