Memtree 2.1.2.233

You can easilly keep files or subjects that are related together in a group. These groups or categories are displayed in a tree. You can then later move files to other categories if the new category fits the file better, or you can move a whole category to another category.
A toolbar that lets you access most functions with a single click
A tree view that makes it easy to navigate between the different items.
You can start multiple trees. One for research, another one that serve as a database for files that you downloaded from the internet. Another one that you use for learning a new language. Actually, it is unlimited to the number of trees that you can start.
MemTree allows full rich text editing of articles; font: bold, italic, underline, strike through, subscript, superscript, color, font background color, font name, font size, color-marker; paragraph: left, right, center, justify, bullets (normal, numbered), indents and even include a high lighter if you wish to highlight some text.
When adding files you can add some descriptive text for that file.
Easy backups. There is one backup file for all the trees. When backing up you only have to backup the backup file to tape or CD or another location. This backup uses a high compression ratio.
Easy to search for keywords or text when the tree becomes large.
You can also use bookmarks. When you work on a piece of information, and you close the application, when reopening the tree, you can just select the bookmark to start where you've stoped.
Context sensitive help, if you need some move information on a function in the program.
Free support and upgrades to minor versions.