One of the project goals is to spread ProjectPier as far as possible. One of the crucial things doing this is to provide the tool in your native language. Therefore I am very happy to announce that we have 13 different languages for 0.8 available for download, 3 languages which need some more (little) love and 2 additional languages (Italian and Persian) which are currently under construction.
Please see the following table for the status. If you like to contribute or be the maintainer of your language, please contact us :-)