I use OneNote. I have a Notebook for each project I'm on, with tabs to keep my notes organized. My small team, 3 people, has a shared OneNote Notebook to allow

I use OneNote. I have a Notebook for each project I'm on, with tabs to keep my notes organized. My small team, 3 people, has a shared OneNote Notebook to allow collaboration. At my previous employer, we used Atlassian's Confluence.