Apollo.Common is a set of libraries that implement common functionality required by enterprise applications. The emphasis has been placed on expected use by services and web based applications.

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!

Do you still store tons of (big or small) individual resources like pictures on your filesystem which gives headaches each time you deploy or backup? NFileStorage (.NET 3.5) allows quick and easy bundling of your precious files and provides fast integrated accessibility.

A collection of reusable abstractions for enterprise application developer: caching, IoC, pagination, repository, application services, unit of work, background processing, exception trace policy, work item, etc. Integration with Unity 2.0, EntLib 5.0, ASP.NET MVC 3.0, WatiN 2.0, Memcached 1.4.5.