BackCountry Navigator (AKA: BackCountry Navigator TOPO GPS) is an offline GPS map navigation app mainly used for outdoor adventures, developed by CritterMap Software. It can turn your Android-based smartphone or tablet into an outdoor navigation tool that can perfectly replace the traditional handheld GPS devices. Although the software is small in size, it is powerful enough, and supports downloading maps and aerial photos over the Internet.

Global Mapper is a pretty professional map plotting software with comprehensive and powerful functions, as well as friendly UI for everyone to use (praised by numerous users around the world). Global Mapper by itself has all the features of a GIS, and can simplify the complex problems. In the same industry, its main rivals include Esri, GeoMedia, Manifold, and MapInfo GIS products.

HTML5's mightiness, we don't need to introduce too much. Of which, the Geolocation is one of its important features - providing the function for determining user's location. With this feature, we can develop cool web apps based on geographical location information (especially by calling the Google Maps interface).