Two days ago was the 5th Anniversary of when I started coding on my project: http//savannah.nongnu.org/projects/objectify. It's hard to believe that it has been that long already.
I have done all of the development on GNU/Linux (although I have ported it to run on Mac OS X, FreeBSD, and OpenBSD). And I have to say that it runs best on GNU/Linux.
I have just recently moved the Subversion repository to the Non-gnu Savannah because it is my goal for it to eventually become part of the GNU project. The original CVS repository and releases prior to Alpha_30 are on SourceForge under the http://sourceforge.net/projects/nwos project. The older Subversion repository and the Alpha_30 releases are on SourceForge as well under the http://sourceforge.net/projects/objectify project.