Qxw

Qxw is a program to help you create and publish crosswords, from the simplest blocked grid to sophisticated thematic puzzles. It can make rectangular-, hexagonal- or circular-format grids with blocks, bars or both. It has an automatic grid-filling facility that can handle a wide range of answer treatments and you can even add your own answer treatment methods. Grids can be filled using letters, digits, or a mixture of both; non-Roman and custom alphabets are also supported. Qxw can produce output in a range of formats ready for publication.

Qxw also has a non-interactive mode that can solve a wide range of word-based constraint satisfaction problems and can help automate the exploration of grid designs.

Qxw is written in C and has a GUI based on GTK+.