Zim is not very known but this tool is really awesome! I use it for a few years also. I like it because it is simple, efficient, fast. Straight to the point.

Zim is not very known but this tool is really awesome! I use it for a few years also. I like it because it is simple, efficient, fast. Straight to the point. Not like all these cloud and electron apps. And the main top feature of this tool is that data are stored as plain files in a simple folder structure.