BOUML is a UML 2 tool box that allows you to specify and generate code in C++, Java, IDL, and PHP. BOUML is very fast and doesn't require much memory to manage several thousands of classes. BOUML is extensible, and the external tools (named plug-outs) can be written in C++ or Java, using BOUML for their definition as any other program. UML models can be exported to HTML pages, including PNG or SVG graphics.
KiCad EDA is software for the creation of electronic schematic diagrams and printed circuit board artwork. It is a set of four programs and a project manager: Eeschema (schematic entry), Pcbnew (a board editor), Gerbview (a Gerber viewer (photoplotter documents)), and Cvpcb (a footprint selector for components used in the circuit design). Kicad is the project manager. It includes a 3D visualization feature.
FSMDesigner is a Finite State Machine (FSM) design tool with integrated Hardware Description Language (HDL) generation. It uses the Simple-Moore FSM model, guaranteeing efficient fast complex control circuits. It features graphical design of FSMs, support for automatic default transitions, validation of FSMs, a well-defined XML file format, generation of RTL HDL output for both Verilog and VHDL, full scriptability in Python, a modern GUI with undo and redo, simulation mode support, and table based data manipulation.