- Code-Breaking, Cipher and Logic Puzzle solving tools
- About Boxentriq and Press information
- Hall of Fame
- Cookie Policy
- Privacy Policy
- Web Puzzles 1
- Beginner puzzle: A different kettle of fish
- Casual puzzle: A lovely place
- Beginner puzzle: Flying to the moon
- Beginner puzzle: Full moon
- Introductory puzzles
- Puzzle: Launder
- Casual puzzle: A math problem
- Casual puzzle: New year riddle
- Puzzle: The Pyramid
- Casual puzzle: Test your math skills
- Puzzle: TTTT2
- A1Z26 decoder and encoder
- ADFGVX cipher decoder and encoder
- ADFGX cipher decoder and encoder
- AES/Rijndael Cipher
- Affine Cipher (online tool)
- Anagram Solver (online tool)
- Ascii table, ASCII character codes hex, decimal, binary
- Atbash Cipher (online tool)
- Babylonian numerals
- Baconian cipher
- Barcode Scanner (online tool)
- Base64 decoder (online tool)
- Base64 encoder (online tool)
- Baudot Code, Baudot-Murray Code (online tool)
- Beaufort Cipher (online tool)
- Bifid Cipher (online tool)
- Big Number Calculator (online tool)
- Binary Analysis (online tool)
- Binary to Decimal Converter (online tool)
- Book Cipher Decoder (online tool)
- Braille Alphabet (decoder, translator)
- Caesar Cipher Decoder (online tool)
- Cicada 3301 First Puzzle Walkthrough
- Cipher Identifier (online tool)
- Columnar Transposition Cipher (online tool)
- Convert Case (online tool)
- Crossword Solver & Missing Letters Finder
- Cryptic Crosswords
- Cryptogram Solver (online tool)
- Dancing Men Cipher - decoder, translator
- Decimal to Binary Converter
- Decimal to Hexadecimal Converter
- DES encryption
- Double Transposition Cipher (online tool)
- Elder Futhark, runic alphabet
- Enigma machine
- Euler Number (e = 2.71828...) to 10,000 Decimals
- Image Metadata (Exif)
- Four-Square Cipher (online tool)
- Frequency Analysis (online tool)
- Geek Code
- Golden Ratio (1.618...) to 10,000 Decimals
- Greek Alphabet (letters and numerals)
- Gronsfeld Cipher (online tool)
- Hex Analysis (online tool)
- Hexadecimal to Decimal Converter
- Hexahue Alphabet - decoder, translator
- International Code of Signals maritime flags
- Keyed Caesar Cipher (online tool)
- Letters To Numbers (online tool)
- Low contrast images
- Mayan numerals
- Modular Exponentiation Calculator
- Modular Multiplicative Inverse Calculator
- Morse Code Translator, Decoder, Alphabet
- Music Steganography and Musical Cryptograms
- Numbers To Letters (online tool)
- One-Time Pad (OTP) Decoder and Encoder
- Openpuff
- Outguess
- Pi (3.1415...) to 10,000 Decimals
- Pigpen Cipher (online tool)
- Pixel Values Extractor
- Playfair Cipher (online tool)
- Prime numbers
- QR Code Scanner and Translator
- Quantum Computing and Quantum Cryptography
- Rail Fence Cipher (online tool)
- RC4 encryption
- Remove accents from text
- Remove spaces tool online
- Reverse text tool online
- Roman numerals
- ROT13 Decoder (including ROT47 and ROT18)
- Route Transposition Cipher
- RSA encryption
- Semaphore flags - decoder, translator
- Spectrograms
- Steghide
- Stereograms
- Synonyms and antonyms
- Tap Code
- Text Analysis (online tool)
- Text extractor tool
- Trifid Cipher (online tool)
- Unicode
- Upside down text, flip text [uʍop ǝpᴉsdn]
- UTF-8 Decoder
- UTF-8 Encoder
- Variant Beaufort Cipher (online tool)
- Vigenère Cipher (automatic solver)
- Word Unscrambler (online tool)
- The Zodiac Ciphers