ABC Genius: Helps solve word puzzles including crosswords. [Windows]
Crossword Maestro: Uses Artificial Intelligence to solve cryptic clues with full explanations. Other features. Free trial. [Windows]
Crossword Solver 3.0: Downloadable search program for solving assistance. Uses clues rather than partial word search. [Windows]
PuzzLex: Solve a range of word puzzles including letter patterns and anagrams. [Windows]
Word Wizard by Codasoft: Letter pattern searcher. [Windows]