| Horde_Idna | Provide normalized encoding/decoding support for IDNA strings. |
| Horde_Idna_Exception | Exception class for the Horde_Idna package. |
| Horde_Idna_Punycode | Punycode implementation as described in RFC 3492. |
| Horde_Idna_Translation | Horde_Idna_Translation is the translation wrapper class for Horde_Idna. |