Eonet can be easily translated in any language.
In order to do so, you need to use the language file (.pot) included within Eonet.
You can find it at eonet/languages/eonet.pot (in the theme’s directory).
Then, if you want to have a multi-language site, which is different. You can use the famous WPML plugin (unfortunately not free BUT powerful).
Last but not least, if you have translated Eonet in your language, feel free to send the .po / .mo files to our team so we can add them to the next update (copyright mention and a percentage of your license refunded).