Very good software. It would be even better, if you add Python scripting.
This is hands-down the best crossword-solving software out there. We just need a Mac version now! (hint)
Very much improved over the other clients out there like Crossword Solver and Across Lite. Polished, and very customizable interface. Lots of extra add-on tools like clue search cross-reference jump, and best of all a puzzle downloader. 5 stars.