http://www2.chemie.uni-erlangen.de/software/wodca/index.html
WODCA is intended to be used by organic chemists and process chemists that work in the laboratory. We therefore have aimed to make it as easy to use as possible. On the other hand, WODCA offers many tools for planning a synthesis and gives the user great flexibility in switching from one tool to another. This has required us to provide WODCA with many windows, menu entries, buttons, options, etc. somehow frightening the novice.