This is a continuation of my yesterday's question: What software makes you happy? (http://news.ycombinator.com/item?id=128714 http://news.ycombinator.com/item?i

This is a continuation of my yesterday's question: What software makes you happy? (http://news.ycombinator.com/item?id=128714 http://news.ycombinator.com/item?id=128714). Given the number and breadth of comments, I certainly think there's a pattern to be discovered here. Your opinion is valued!