| Class | Description | 
|---|---|
| BCodec | Identical to the Base64 encoding defined by RFC 1521
 and allows a character set to be specified. | 
| PercentCodec | Implements the Percent-Encoding scheme, as described in HTTP 1.1 specification. | 
| QCodec | Similar to the Quoted-Printable content-transfer-encoding defined in
 RFC 1521 and designed to allow text containing mostly ASCII
 characters to be decipherable on an ASCII terminal without decoding. | 
| QuotedPrintableCodec | Codec for the Quoted-Printable section of RFC 1521. | 
| URLCodec | Implements the 'www-form-urlencoded' encoding scheme, also misleadingly known as URL encoding. |