Version 2.0 of my Sudoku solver is now complete and available for download.
Version 2 adds a variety of features, from the ability to save and load sudoku puzzles, better handling of whitespace, better handling of window sizes, use of keyboard shortcuts, a check for contradictions in input, and the use of graphical icons within the file. Overall usability has been greatly improved.
A few ideas are still around for a version 3, such as the ability to “unsolve” and to keep track of if the current version has been saved or not. However, with less time on my hands it will probably be awhile before the next version is released.