ArcBruTile display tiles from OpenStreetMap, Bing, Google, SpatialCloud and TMS/WMS-C Services in ArcGIS Desktop.
Library to access tile services for geodata. Current protocols supported: TMS, WMS-C.
GMap.NET is great and Powerful, Free, cross platform, open source .NET control. Enable use routing, geocoding and maps from Google, Yahoo!, Bing, OpenStreetMap, ArcGIS, Pergo, SigPac, Yandex, Mapy.cz in Windows Forms & Presentation, supports caching and runs on windows mobile!
Repeating Texture Creator is a simple app for beginners, which can be used to make any image "seemless". It's developed in C#.
This Application will help XNA developers create game maps and easily implement them into their games. This includes both 2D maps and 3D Terrain maps.