My Zettelkasten and secure note-taking tool is Passfindr.
My sketch book is a Moleskine notebook.
Most of my notes are URLs, micro-notes, ideas, login credentials for online and other accounts, addresses and everything between. Lots of micro documents. Some of the notes are 20+ years old. Finding these notes and finding them fast is crucial. Passfindr does that with ease and I get information faster than anything else. Fast searching/finding matters. Once you get the idea behind the internal about: commands, you can even enhance the searching and finding capabilities and build your own Zettelkasten.
Most of my notes are URLs, micro-notes, ideas, login credentials for online and other accounts, addresses and everything between. Lots of micro documents. Some of the notes are 20+ years old. Finding these notes and finding them fast is crucial. Passfindr does that with ease and I get information faster than anything else. Fast searching/finding matters. Once you get the idea behind the internal about: commands, you can even enhance the searching and finding capabilities and build your own Zettelkasten.