Crosswordsite - Both American and British English styles graded from easy to hard for solving online or on paper..
Fernsmacker's PuzzlePick - Features three different puzzles: a weekly cryptic crossword, a monthly double acrostic and a twice weekly trivia puzzle. Subscription needed..
Guardian Unlimited Crosswords - Paid crossword subscription site with puzzles that can be solved online or printed out..
The New York Times Crosswords & Games - The daily crossword puzzle with four ways to play, plus free classic crosswords and trivia quizzes. Subscription required..
Puzzle Choice - Offers online and offline versions. Includes different styles such as alpha-cross, cryptic, and codeword..
The Puzzle Society - Paid subscription site offering online and offline versions of daily, weekly and monthly puzzles..
Puzzlers Cave - Free cryptic and themed crosswords to print or play online. Also offers a creation tool and forums..
Puzzle.TV - Subscription-based site with new puzzles daily. Also has word search, codebreakers and cryptograms..
Tidbits Puzzles - A collection of tidbits style crosswords..
Times Online - Offers paid subscription to weekly and monthly puzzles from The Times and The Sunday Times..
The World's First Crossword - Read about and solve crossword by Arthur Wynne, first published in the New York World in 1913..
XWord - Crossword Compilers - A collection of various styles of puzzles by Anina Roux and her team, compiled for magazines and newspapers in South Africa..
Xwords.co.uk - Play online or print and solve. Also offers creation tool. Registration is free..
Yahoo! Games: Crossword - New puzzles daily, archived for two weeks. Free registration required..
csmonitor.com - Play on words - Discussion about the documentary movie 'Wordplay' which shows how people from different walks of life relate to crossword puzzles. (June, 2006).