You can download the shareware-version of Wordtrainer from this page.
Click on the link above to download the shareware-version of Wordtrainer 3.0
Wordtrainer for Linux
A Linux version of Wordtrainer is under development. Follow the link below:
Wordtrainer Linux Edition
Wordtrainer in English
There is now an update for the versions of Wordtrainer which wasn't translated to English (earlier than 3.06). You can download and install the English update if you have an older version of Wordtrainer 3.0 installed.