Give your objects a REST (interface) with db4o

ADO.NET Data Services Framework, codename Astoria, a framework released with the Service Pack 1 of the .Net framework 3.5 makes it very simple to create data services that are accessible by HTTP. Data services can be created from any data source that implements the IQueryable<> interface (such as db4o). For updates to work however the new IUpdatable interface must also be implemented. db4o 7.10 ships with the new Db4objects.Db4o.Data.Services assembly to provide just such an implementation.