Using Google codesearch:
Java: http://google.com/codesearch?hl=en&lr=&q=lang%3Ajava+application%2Fatom%5C%2Bxml&btnG=Search (50 results) C++: http://google.com/codesearch?hl=en&lr=&q=lang%3Ac%2B%2B+application%2Fatom%5C%2Bxml&btnG=Search (10 results) Ruby: http://google.com/codesearch?hl=en&lr=&q=lang%3Aruby+application%2Fatom%5C%2Bxml&btnG=Search (50 results) Perl: http://google.com/codesearch?hl=en&lr=&q=lang%3Aperl+application%2Fatom%5C%2Bxml&btnG=Search (100 results) C#: http://google.com/codesearch?hl=en&lr=&q=lang%3Ac%23+application%2Fatom%5C%2Bxml&btnG=Search (9 results)
-- John Panzer System Architect, AOL http://abstractioneer.org