Import your PCB boards to FreeCAD
Digital Circuits Design and Simulation
kicad StepUp allows exporting kicad 3D board and comps in STEP AP214
A calculation tool for the MC34063
CT Soft is software designed to be used with Control Techniques Drives
IEC 104 RTU Server Client Simulator Source Code Library Win Linux
AVR simulator IDE
Gerber Drill IPC2581