- All Star Puzzles: Cryptogram Puzzles
 - Featuring a large collection of cryptogram puzzles consisting of quotable quotes, hints, and a hidden author's name for each puzzle. - American Cryptogram Association (2)
- Find sites for the American Cryptogram Association (ACA), a non-profit organisation dedicated to promoting the hobby and art of cryptanalysis, that is, learning to break ciphers.
- Brain Food: Cryptograms
- Offering a collection of cryptogram puzzles that consist of encoded English sayings or quotations. Find hints and solutions for each puzzle.
- CRpuzzles: Cryptograms
- Offering classic cryptogram quote puzzles with an added challenge of deciphering the author's name from the cipher-quote letter pairs used to solve the puzzle.
- Crypto Challenge
- Featuring a software application used to substitute letters in cryptogram puzzles.
- CryptoChallenge
- Featuring cryptogram games with encrypted sentences to decipher. Solve each word puzzle to find the URL that gives access to the next stage of the game.
- Cryptogram Corner
- Featuring daily puzzles and cryptograms to solve with an archive of previous challenges and results.
- Cryptogram Game
- Decipher a daily cryptogram puzzle or create your own. Includes hints for solving current puzzles. Requires Flash.
- Cryptograms
- Featuring helpful hints and tips to solving cryptogram puzzles, with new puzzles to work on weekly. Includes an archive of answers to previous cryptograms, and an honour roll for expert solvers.
- Cryptograms Weekly
- Featuring weekly cryptogram puzzles about quotations, aphorisms, and the like. Includes FAQs, publication information, and an archive of previous puzzles.
- Cryptographs
- Puzzles featuring a quotation whose letters have been transposed and a portrait of the source or subject of the quotation.
- Cryptopop's Zyptograms
- Cryptogram enthusiast and father Cryptopop blogs his own style of cryptogram puzzles, called zyptograms, for readers to solve. These puzzles more challenging and aimed at the experienced solver.
- DiscoverySchool.com: Puzzlemaker - Cryptograms
- Use the Discovery School's Puzzlemaker to create your own cryptogram puzzles.
- Edgar Allan Poe Cryptographic Challenge
- Find information for "The Challenge Cryptograph" a 150-year-old cryptograph which may have been written by Poe. Includes details on how the cipher was solved and the mystery that still surrounds the puzzle.
- Kidzone: Cryptogram Maker
- Choose to solve a number of pre-made cryptograms or build your own cryptogram puzzle to challenge your friends.
- Literary Cryptograms
- Each cryptogram puzzle features an encoded quotation from a literary work, that has been encrypted using a simple letter substitution code.
- Newspaper Cryptogram and Contest
- Compete in three daily cryptogram puzzle contests from the Daily Cryptogram, a part of the Minneapolis Star and Tribune newspaper.
- NOVA: Decoding Nazi Secrets
- Learn how the Allies were able to crack codes produced by Enigma, a supposedly impenetrable German cipher machine, and thereby influence the course of WWII.
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