I don't. I let my brain do its own thing. If I forget something it's because I'm not using it much. If I forget something and need it again I search for it on

I don't. I let my brain do its own thing. If I forget something it's because I'm not using it much. If I forget something and need it again I search for it on the internet. It's beautifully simple and requires zero configuration, cost or maintenance.