I didn't expect this, but passwordstore.org is actually a great
general-purpose notebook-style application.  It's intended (and I do
use it) as a password manager. It's designed to be super UNIXy, so
basically the ``pass`` command creates a directory for its files (the
location is configurable, but it defaults to ~/.pass, but you can
maintain any number of them you want, such as ~/.notebook or whatever).

Each file in your pass directory is encrypted with whatever key you
configure.

When you use the command ``pass edit mynote.txt``, it decrypts
~/.notebook/mynote.txt`` in RAM, passes it to your EDITOR or VISUAL
setting (I use Emacs but I think it can be anything), and then encrypts
back to the file.

It's been working really well. Not at all how I expected to use it (I
also use it for its intended purpose) but quite effective.

-seth

HI!

Thank you for the 2 responses. Quickly I indeed did find both Emacs and Vim have extension which can do the job but was more into a graphical solution.

Pass indeed seems interesting. I will look into it, so thank you for that.

Doing further research I also found a non-free app which is cross-platform called Sublimetext, which works with a plugin, but haven't figured out how to get this hierarchised tree structure layout yet.

I am also looking into Geany, which is also supposed to work with a plugin, but I need to fiddle a bit more with decryption as it's missing something (probably from my side). There also seems to be a plugin for the tree structure.

Thank you again for the help.

Fred