Startup Notes - Most actionable advice from each Startup School speaker
GitJournal - Manage your Notes from any Git Repo.
Whimsical - The visual workspace for teams.
Google Keep - Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Notebook PEA - Protects your private notes with a password.