Frontier is now a flexible, programmable milieu for constructing Web-based applications - what the press release calls a "content management system" ... [I]t's a completely programmable Internet client/server application that makes Web pages and stores information, along with features for sharing and controlling that information.
Eric Kidd does a great public service by comparing Zope with Frontier.
[Explain Dave.Net, Frontier features, give sample code, ...]