The Eclipse Foundation and Google have gotten together to form Eclipse Labs, a site where developers can host their Eclipse-based projects. Eclipse Labs is based on Google Code, so it should be familiar to at least some open source developers. The Labs are to be more of a repository than anything else. Anyone can host Eclipse-based work there, but doing so does not make your work an official Eclipse project.
The Labs opened yesterday, but there are already some projects hosted there, such as redview, anyedit, and an integration plug-in for using Maven with Android.