If you are used to writing something on computer in daily life, you'll need a handy text editor. In addition to large office software like Microsoft Office, we actually have a lot of lightweight plain text/Markdown editors to choose from. Thereinfo, iA Writer is a good example. With its Help, whether it's moving your office anywhere, blogging, journaling, or drafting, it enables you to write more easily and efficiently on a variety of platforms...

MemPad is a quick notes taking freeware with a clear winner feature than Notepad - a structured index (that's to record everything in the form of tree structure).