People that stacked Roam Research
An amazing tool that extends naturally from your mind to the written word. As you learn to use Roam, you get compound effects on the knowledge you've put into it. Feels like the team behind Roam also work to improve it every day. Worth it.
I had always loved Tiago Forte's idea of "Build a Second Brain" and tried out his PARA Method in Evernote, but it never really clicked into place. Roam Research fixed that - it's the most delightful and intuitive tool for personal knowledge management.