Crosswords can be any size;
Word layout is completely free. Every letter is a separate unit in a crossword grid, so you can design oblique, intermittent or intersecting with themselves words;
Word searching is completely controled by user.
Word libraries are organized into one big tree - you can arrange them into categories, categories of categories and so on.
Sharing features: importing, exporting- you can send library you made for other people or receive them and add to your library tree.
National symbol support.
Export of crosswords to text and graphic files.
Nice and unusual user interface makes job more comfortable;