Balsa is an asynchronous circuit simulation and synthesis system. Balsa is built around the Handshake Circuits methology, and it can generate gate level netlists from high-level descriptions in the Balsa language. Both dual-rail (QDI) and single-rail (bundled data) circuits can be generated.
pdnmesh is an automatic, 2D Delaunay mesh generator, and a solver for finite element analysis. It is capable of producing PostScript output of the mesh and contours. It is possible to use DXF files as input after filtering. It requires GTK/GtkGLExt and Mesa/OpenGL or MFC (Win32), and is written in C.
Electronic Design Automation - Index is a system that can be used in the electronic world to keep track of your: Schematic, Printed Circuit Board, Front Plate, and Programmable Logic Unit numbers. This is very useful when you have drawn many electronic schematics and PCBs in an EDA program such as Eagle, gEDA, Protel, or Orcad. It's also useful if you've created a front plate layout in an image editor such as GIMP, Corel Draw, or Photoshop.
XCircuit is a UNIX/X11 program for drawing publishable-quality electrical circuit schematic diagrams and related figures, and producing circuit netlists through schematic capture. XCircuit regards circuits as inherently hierarchical, and writes both hierarchical PostScript output and hierarchical SPICE netlists. Circuit components are saved in and retrieved from libraries which are fully editable. XCircuit does not separate artistic expression from circuit drawing; it maintains flexiblity in style without compromising the power of schematic capture.