The UPnP PortMapper is an easy to use program that manages the port mappings (port forwarding) of a UPnP enabled internet gateway device (router) in the local network. You can easily view, add and remove port mappings.
In the new version, the UPnP library weupnp was integrated additionally to SBBI UPNPLib. If your router was not supported by the old library, try the new one!
By default, SBBI UPNPLib is used. You can switch to weupnp using the settings dialog.