Proetus is a .NET persistence framework. Once saved objects can be queried, retrieved, updated, and deleted. Adapters exist, both local and over a web service, to save objects to Microsoft® SQL Server, SQLite, MSMQ, and XML.
The emerge toolkit is a state-preserved web development framework. Build your whole application in one easy place. Uses O/R Mapping on the back-end, and Comet-style sockets on the front. http://emergetk.com