What's wrong with single person open source projects?
I've developed a couple of them.
[link|http://objectiveclips.com|http://objectiveclips.com]
[link|http://www.blackbagops.net|Black Bag Operations Log]
[link|http://www.objectiveclips.com|Artificial Intelligence]
[link|http://www.badpage.info/seaside/html|Scrutinizer]