ScalaPrologCoq, Dafny, Frama-C and TwelfTwelf +F#Python, starting with VPython, to visualize duplications & speciations in timeCC++ & Java to filter biological networksScala]Scala]Assembly, C++] (G)Scheme, Common Lisp] (G+)Haskell] (G~)Python] (G~)Scheme] (G)Csound] (G)Java]Assembly]Matlab]Scheme]Common Lisp]C++]C, Python]C, Python]OCaml]C++]Java, JavaScript, Python, Sawzall, Dremel, Awk & shell scripts
CSS compiler for Android projectsJavaScript-to-JavaScript compiler performing static analysis, code optimization and code compression
C# to enable a RAD (Rapid-Application Development) experience
for data-driven WCF (Windows Communication Foundation) clients
C++ according to the RADIUS standard
Oracle's RDBMS with Philip Greenspun