# Notetaking Systems and Tools Notetaking is hot! Plenty of folks around the globe are working to improve how they remember and connect what they discover in life. Here are some of the major sub-categories: - Systems like Build a Second Brain and Linking Your Thinking - Organizing schemes like Zettelkasten - Productivity systems like Getting Things Done - Richly linkable writing tools like Roam Research, Mem, Obsidian, Notion and tktk [[Jerry Michalski|Jerry]] maintains a list of these in his Brain, under the general theme of Personal Knowledge Management: