[delduca]

It might not be the best tool, but since I use it as a markdown editor, I also utilize it as a notes keeper with tags. In Bear, when you type #something, the hashtag immediately appears in the sidebar. I have many tags, including python, work, today, go, sql, and others.

The killer feature for me is the iCloud sync and the fantastic iOS app, allowing me to read and write notes on any device.