I am currently working to develop a web-based mapping application. A lot of the mapping tools such as google maps are 2d imagery. I know that google earth has a 3d browser plugin, but a requirement of this project as that I need to be able to host my own map server (I know I can with Google Earth, but the enterprise edition is pricey).
Are there any good alternatives to a 3d mapping engine for the browser (I've looked into using worldwind for the browser, but that only supports applets for the web)?
