PowerSmith electronic Smith Chart

Years ago I wrote a simulation program focused to Smith Chart and RF electronic circuit simulation. It works under DOS. In those times I haven't found a similar program satisfying my needs and presenting real-life physical models and properties. Models with structures I can completely modify and restructure. The program is used by enthusiats, universities, and small companies. It needs face-lift to present requirements for mobile phone and Linux. All the best, 73.