» Across and Across Lite    Literate Systems' crossword display and construction software. [Windows, MacOS, Linux]    http://www.litsoft.com/across/preview.htm

» Arensus Crossword Puzzle Editor    Tool for creating and publishing crosswords. [Windows]    http://www.tea.ch/

» EclipseCrossword    Creates crosswords and puzzles, includes project ideas, examples, tutorials and international applets.    http://www.greeneclipse.com/eclipsecrossword/

» Henry Casson's Crossword Utility    Enables a crossword grid to be entered and converted to and from a text encoding which can be emailed. Freeware. [Windows]    http://home.freeuk.net/dharrison/puzzles/utility.htm