🛠️Cipher Decoders & Cryptanalysis Tools (English)
Cipher Decoders & Cryptanalysis Tools
A suite of specialized utilities designed for breaking monoalphabetic substitution ciphers.
Fast
Cryptogram Solver
Automated constraint-satisfaction solver and interactive dual-line grid.
Open Cryptogram Solver→Newspaper
Cryptoquip Solver
Dedicated solver for daily newspaper Cryptoquips with starter clue support and pun deciphering.
Open Tool→ETAOIN
Frequency Counter
Detailed letter and bigram distribution counter with reference overlays.
Open Tool→0.1.2.0
Word Pattern Finder
Search words matching cipher pattern signatures (e.g. 0.1.1.2 for "BOOK").
Open Tool→ROT13
Caesar & ROT13 Decoder
Instant rotational cipher decoder across all 25 shift keys.
Open Tool→