TakeNote manages files with lots of small pieces of text, keeping them in a tree hierarchy. It can be used to store notes, code snippets, to-do lists, contact information, etc. TakeNote has been intentionally designed to work exclusively with plain text (i.e. without formatting) to keep it small and simple.

There are other programs on the Web much more powerful and advanced, but all of them are big, slow, and resource-intensive! On the other hand, TakeNote is very light and won't hog your system.