Best in class SoC Integration Platform, IP-XACT, Verilog VHDL, UPF
Gerber to PDF converter
A set of freeware applications for viewing/processing P-CAD files.
Eclipse-based IDE for design verification tasks
Convert DXF drawings of circuit boards to gEDA-PCB files.
TCAD Device Simulator
A graphical Finite State Machine (FSM) designer.
RS485 library for C# and Python
Labcoat; the VHDL graphic emulator.