Camellia is a block cipher from Mitsubshi and Nippon Telephone and Telegraph. It can be used as a drop-in replacement for AES in many applications since it has the same 128-bit block size and takes the same 128, 192 or 256-bit keys. It is one of the standard ciphers for the NESSIE (New European Schemes for Signatures, Integrity and Encryption) project.
The cipher is freely available for any use. It has a home page.