The Pirated: Microsoft Streets and Trips
Microsoft Streets and Trips is currently the bestselling travel and map software program. It has advanced GPS functionality with detailed street maps, directions, and trip planning features. Instead of paying for the standard and deluxe editions, check out these other options.
Get around with Google Earth
Google Earth has been one of the mostly wildly popular free map software applications for some time now. You can explore maps in 3D imagery as well as find local addresses and businesses with real imagery. You can record your tour as well as hear an audio guide walk you through the different maps.
Taking off with Travel by GPS
Travel by GPS offers the free GPS Maps and Tour Guides with rich map content that includes both audio and video narration. You can type in specific map searches or browse through their library of most popular guides. The maps come in a variety of formats, including the most commonly used by GPS devices, which are GPX file types.
OpenStreetMap can be your open source option
OpenStreetMap is an editable map of the entire world that has been released with an open content license. Anyone can get involved with the project and it has been built from scratch using GPS traces. However, as with any open source project, there are always concerns about accuracy.