glGo is available in English, German, Dutch, Spanish, Chinese and Czech. Thanks to Maarten Derksen for the Dutch translation, to Alberto Hernando for the Spanish version, to Exaos Lee for translating glGo into Chinese and to Chejnik for the Czech version.
If you are interested and want to offer your help to translate glGo into your language somewhen in the future, please drop me a mail.
Japanese, Chinese and Korean characters are supported in glGo out of the box on Mac OS X. On Linux and Windows you might need to install the required fonts and adjust the system locale.