Remote Debugger is a tool for developers that allows one to debug an application over IP without ActiveSync. This enables you to debug an application on a remote PC if the PPC is connected to internet (say, via wiFi);

Visual studio 2005 ? Download here!
Visual studio 2008 ? Download here!

The information is based on the aricle found here as discussed in here.
Special thanks to Joao Paulo Figueira.