Θ Games: Puzzles: Brain_Teasers: Cryptograms

Site list:

American Cryptogram Association: Crypto Drop Box Sample journal issue, links to member homepages, subject-related graphics, subscription information, and resources.
Crypto Challenge Free Windows-based software for solving. Uses quotations, humorous sayings, and scriptures. Extras available for a nominal charge. Includes screen shots. Keeps track of which letters are in play. Counts the frequency of each letter. Word lookup table.
CryptaGram Offers download of limited version solver software. Extended version available for purchase. Has 14 quote topics, three levels of difficulty, and helpers. [Windows 95/98]
OneAcross - Cryptograms Solving tool through web browser. Allows entry of a phrase, or selection from "easy, medium, or hard" quotations taken from the Linux fortune collection. Also features the ability to send cryptogram-encoded messages via email.
Cryptogrammaton Ancient Greek mythological themes. Solutions listed separately, along with stories about the mythical characters in the puzzle.
Cryptogram Solver Source Code Source code archive with several programs to automatically solve puzzles. Also includes "crypo-quote" of the day.
Puzz.com: Cryptograms Ten problems with solutions taken from famous sayings, adages, and proverbs. By William F. Bultas.
Edgar Allan Poe Crypto Challenge Historical background, contest details, and solution for the 157 year-old cryptograph which may have been written by Edgar Allan Poe.
Cryptogram Corner Daily puzzles and past archive. Has links to other subject related sites.
Copycreate.com Cryptoquote/Cryptogram Daily cryptoquotes, and archive. Has browser-based helper form.
Cryptograms Louise A new problem every week.
Cryptographs Puzzles featuring a portrait of a famous person and an encrypted quotation of its source or subject.
Cryptogram game Browser based solver. [Requires Flash 6]
Between Waters Daily problems and solutions available with or without interactive browser-based solver.
Cryptograms Weekly Weekly puzzles for printing and solving along with the solutions. Also offers a magazine and an online store.
CryptoChallenge A series of puzzles to solve. Has an encrypted sentence for each level. When it receives the decrypted answer it goes to another page with another encrypted message in a more advanced level.
Cryptagram Windows version of CryptoQuote and WordSearch. It is available in a freeware and an extended version.
RuneQuest Challenge A multi-layered cipher puzzle using lore themes with cash prizes for various checkpoints and the final solution. In order to be eligible for the prizes, a solver must register their name/address/email and pay a registration fee. Registered people will get some additional helpful clues.
Letter Frequency and Word Frequency in the English Language Has the statistics for various types of writings(Press, Religious, Scientific), position in the word(first, second, third, last), and digraphs.
Cryptic Quoter Functional online cryptogram machine and solver. Has wof and buster extra features.