Collection with browser-based solver tool. Includes hints. After deciphering the hidden quotation, solvers must derive the author's name from the cipher-quote letter pairs to complete their puzzle task. [Requires Java]
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]
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.
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.
Collection based on literary passages, both general and with specific sets from William Cowper, Jane Austen's Persuasion, Plato's Phaedrus. Includes browser-based solution and solving instructions.
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.
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.