The program supports German, English and Spanish language. You can change the program's language via the preferences menu.
The Zettelkasten is free for private and professional use! The only software requirement to use it is to have the latest Java-Runtime-Environment installed (which is also free).
If you want to try out the program with a sample data base, you can download this sample file.
You can find the latest Zettelkasten releases on GitHub!
