Amazingly simple, amazingly useful, personal database software (based on the windows-only Treepad program). Simply store your notes in a single tree structure. Excellent for lists, outlines, document planning...
I was a happy user of Treepad Asian in English. Then I found it frustrating when I needed to use Chinese language. Glad to find Jreepad totally compatible with Treepad and it was easy to use Asian languages. I basically use Treepad as a personal database. Gratitude to Mr. Stowell!