> I installed it but Is there no gui for ng-spice ? Umm, ngspice -- like most SPICEs -- is a CLI (command line interface) driven program. You can draw your schematic using gschem and then create SPICE netlists using "gnetlist -g spice-sdb". Then you import your SPICE netlist into ngspice and type commands to the program to do your simulation.
GEDA has a graphical user interface program for ngspice called "GSpiceUI". You can try using it. The thing it does for you is replace the CLI with a graphical menuing interface which drives ngspice. If you want a point-and-drool SPICE simulator with a like the old PSpice, browse over to the Linear Tech site and dowload LTSpice/SWCadIII. It is a SPICE simulator with a nice schematic capture front end. It's freeware, but not open-source. Stuart
