DesignWorks Lite - Schematic editor for circuit diagrams.
With DesignWorks Lite you can: Draw, save, edit and print complete, professional circuit diagrams using powerful features like bussing, multi-level Undo/Redo, and automatic gate packaging. Use the library of common 74XX and discrete symbols provided or create your own libraries using the built-in symbol editor. Send compact circuit diagram files to friends or colleagues over the net.