[Haskell-cafe] humor

When I met Java some time ago, I said to myself: "Java is a great language to write IDEs for the Java language". Now that I'm looking for Haskell source code (perhpas that there is another way to learn a language than to spy on others?), I'm tempted to say: "Haskell is a great language to write libraries for the Haskell language" Well... more seriously, does someone have got links to applications with visible source? Enrico Santoemma