Haskell bindings to the International Components for Unicode (ICU) libraries. These libraries provide robust and full-featured Unicode services on a wide variety of platforms. Features include: Both pure and impure bindings, to allow for fine control over efficiency and ease of use. Breaking of strings on character, word, sentence, and line boundaries. Access to the Unicode Character Database (UCD) of character metadata. String collation functions, for locales where the conventions for lexicographic ordering differ from the simple numeric ordering of character codes. Character set conversion functions, allowing conversion between Unicode and over 220 character encodings. Unicode normalization. (When implementations keep strings in a normalized form, they can be assured that equivalent strings have a unique binary representation.) Regular expression search and replace. Security checks for visually confusable (spoofable) strings. Bidirectional Unicode algorithm Calendar objects holding dates and times. Number and calendar formatting.