to-regex-range
Pass two numbers, get a regex-compatible source string for matching ranges. Validated against more than 2.78 million test assertions.
globalize
A JavaScript library for internationalization and localization that leverages the official Unicode CLDR JSON data.
parse-numeric-range
Takes a string, such as "1,2,3-10,5-8" and turns it into an array of numbers
letter-count
This is a calculator which counts the number of letters/ characters/ lines/ words/ numbers or wordsigns in a text, useful for your tweets on Twitter, as well as a multitude of other applications.