- Bio Puzzles - - Offers biology and natural history themed puzzles. Several free samples to download.
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- Lace 2 - - Crossword dictionary with over 230,000 words and phrases, including specialized lists. Available for purchase.
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- Names Names Names - - An alphabetical listing of proper names taken from actual crossword puzzles. Available for purchase.
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- Puzzle People - - Offers books and monthly magazine subscriptions with standard, cryptic, clueless, and trivia crosswords.
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