Holy cow. Is that as good as it looks?
Not quite, but the author seems to put his all into it. Some features are a little buggy and a few of the options are only placeholders to be added later.
However, it is already extremely good for a free program and once finished, it will be great. If Wotc took this program and took it as a template for their GM tools, they couldn't go too wrong.
Also, the author is very helpful on his facebook site, posting a question or a bug got me an answer within 48h.