MDictionary has a simple user interface. You will understand the whole concept at once.
MDictionary is licensed under the GPL license, so you can download and use this program for free, and download its source code too.
MDictionary is plugin based and has an easy to use plugin management system which is able to install the desired plugins. If you want to create your own dictionary database, please contact the author.

very nice apps, thanks

bit slow, takes much time to find a word..

anyway, finaly a freeware dictionary for 3rd edition , good find !

Thanks for the heads up, OP! We need to see (and support) more open source on the 3rd platform, this is great.