James sent in an open source Linux program that does all the things we previously posted (the Windows based “Virtual Breadboarding“) and much more (including PIC compilation, modeling, and programming – “KTechlab provides a powerful environment for electronic circuits and microcontrollers. This includes simulation of a variety of components (logic, integrated, linear, nonlinear and reactive), simulation and debugging of PIC microcontrollers via gpsim, and its own closely-linked and complementary high level languages: FlowCode and Microbe.” Link.