GMap.NET is great and Powerful, Free, cross platform, open source .NET control. Enable use routing, geocoding, directions and maps from Coogle, Yahoo!, Bing, OpenStreetMap, ArcGIS, Pergo, SigPac, Yandex, Mapy.cz, Maps.lt, iKarte.lv, NearMap, OviMap, CloudMade, WikiMapia, MapQuest in Windows Forms & Presentation, supports caching and runs on windows mobile!

 Absolutely Fantastic Piece of Work. - share your projects, say thanks ;} 

• Hot Build - grab cutting edge features and bug-fixes
• Videos - check my adventures...   
• GMap.Net can run at window mobile?
• Old news: google buddy Josh Livni doesn't like it... ;} Oh, really?

• Hot news - Across Lithuania On The Bike
• Create Fork - be the change ;} 

Preview:

The Greatest maps in the world:

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• Generated StaticMap
• Maps Icons