# Unicode related packages
## Casemapping and Casefolding
The `text` package already provides proper unicode casemapping and casefolding
operations.
## Additional features in text-icu
The Haskell package `text-icu` is a full featured implementation of unicode
operations via bindings to the C++ `icu` libraries.
`text-icu` provides the following additional features:
* Normalization checks
* FCD normalization for collation
* String collation
* Iteration
* Regular expressions
# Haskell Unicode Landscape
Unicode functionality in Haskell is fragmented across various packages. The
most comprehensive functionality is provided by `text-icu` which is based on
the `icu` C++ libraries. All related packages are listed here, they may or may
not be up to date or useful.
* [text-icu](https://stackage.org/lts/package/text-icu)
## Basic
* [base](https://www.stackage.org/lts/package/base) Data.Char module
* [charset](https://www.stackage.org/lts/package/charset) Fast unicode character sets
## Unicode Character Database
* [unicode-properties](https://hackage.haskell.org/package/unicode-properties) Unicode 3.2.0 character properties
* [hxt-charproperties](http://www.stackage.org/lts/package/hxt-charproperties) Character properties and classes for XML and Unicode
* [unicode-names](http://hackage.haskell.org/package/unicode-names) Unicode 3.2.0 character names
* [unicode](https://hackage.haskell.org/package/unicode) Construct and transform unicode characters
## Unicode Strings
### ByteStrings (UTF8)
* [utf8-string](https://www.stackage.org/lts/package/utf8-string) Support for reading and writing UTF8 Strings
* [utf8-light](https://www.stackage.org/lts/package/utf8-light) Lightweight UTF8 handling
* [hxt-unicode](https://www.stackage.org/lts/package/hxt-unicode) Unicode en-/decoding functions for utf8, iso-latin-\* and other encodings
### Text (UTF16)
* [text](https://www.stackage.org/lts/package/text) An efficient packed Unicode text type
* [text-normal](https://hackage.haskell.org/package/text-normal) Data types for Unicode-normalized text - depends on text-icu
# Unicode resources
* [Unicode Character Database](http://www.unicode.org/Public/UCD/latest/ucd)