Obsidian
Björn Stierand
Obsidian is my personal knowledge management (PKM) system of choice. I had it already in use since its alpha period, but rediscovered it again in 2023. In the meantime, cool features had been added, such as live synchronization across multiple devices via a free plugin (so you don't have to rely on the paid service Obsidian offers itself).
Nowadays Obsidian is the daily driver for my knowledge collection, gathering inputs from various sources such as Readwise, Goodreads, Snipd as well as manual input. It has replaced Evernote in this regard which I used for many years.
Obsidian also powers this website via its digital garden plugin. For now, I couldn't be happier with the workflow that allows me to publish notes from my Obsidian vault to the website with three clicks.