Jack Gassett of papilio.cc is working on DesignLab.
I like the idea, but not the execution. Due to a lot of java, and because it is mostly windows tested.
So I created my own development environment:
zpuinoprogrammer -s 1000000 -R -d /dev/ttyUSB1 -b /tmp/build2106516259227330703.tmp/Template_PSL_Base.cpp.bin