Text & List Tools
Clean, compare and measure content without uploading working data.
Longest Common Substring Finder
Locate the longest uninterrupted run of Unicode graphemes that appears identically inside both supplied texts.
Open tool →Jaro–Winkler Similarity Calculator
Score short strings from 0 to 1 while rewarding matching order and a shared prefix of up to four graphemes.
Open tool →Jaccard Word Similarity Calculator
Compare the unique normalized word sets in two texts as intersection divided by union with visible set counts.
Open tool →Sørensen–Dice Word Similarity Calculator
Compare two unique word sets with twice the shared-word count divided by the sum of both set sizes.
Open tool →Cosine Word-Frequency Similarity Calculator
Measure the angle between two normalized word-frequency vectors so repeated terms influence the resulting score.
Open tool →Word Overlap Coefficient Calculator
Divide the shared unique-word count by the size of the smaller normalized word set to reveal set containment.
Open tool →Soundex Name Encoder
Turn each Latin-script name into its four-character US English Soundex key for transparent approximate-name grouping.
Open tool →Refined Soundex Name Encoder
Generate variable-length Refined Soundex keys with ten consonant classes and visible vowel boundaries for spell-oriented comparison.
Open tool →Metaphone Name Encoder
Create compact original-Metaphone codes for English words and names using context-sensitive consonant and digraph rules.
Open tool →NYSIIS Name Encoder
Encode Latin-script names with the strict six-character New York State Identification and Intelligence System rules.
Open tool →Cologne Phonetic Name Encoder
Produce Kölner Phonetik digit keys optimized for German names, including umlaut and Eszett preprocessing.
Open tool →Caverphone 2 Name Encoder
Create fixed ten-character Caverphone 2 keys designed for English names encountered in New Zealand records.
Open tool →Atbash Cipher Tool
Apply the reciprocal A-to-Z Atbash substitution to Latin text while preserving case, spaces and punctuation locally.
Open tool →Affine Cipher Tool
Encode or decode Latin letters with validated affine multiplier and offset keys using arithmetic modulo 26.
Open tool →Rail Fence Cipher Tool
Encode or reconstruct text with a bounded zigzag rail transposition while keeping every input character intact.
Open tool →Modern Baconian Cipher Tool
Translate A–Z text to an unambiguous five-symbol modern Baconian alphabet or validate and decode its A/B groups.
Open tool →Beaufort Cipher Tool
Apply the reciprocal Beaufort tableau formula to Latin text with a repeated alphabetic key and preserved punctuation.
Open tool →Plaintext Autokey Cipher Tool
Encode or decode the plaintext-autokey Vigenère variant with a validated primer and locally reconstructed key stream.
Open tool →Keyed Polybius Square Cipher Tool
Build a deterministic 5×5 keyed Polybius square, encode Latin text to coordinates or decode validated coordinate groups.
Open tool →Grade 1 Braille Translator
Convert basic English letters, digits and common punctuation to or from uncontracted six-dot Unicode Braille with explicit capitalization and number signs.
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