Microsoft OneNote is a digital notebook app used for capturing and organizing notes across notebooks, sections, and pages. It’s commonly used for meeting notes, research, project documentation, class notes, and personal knowledge management. OneNote supports typed notes, drawings/ink, images, file attachments, tags, and search, which makes it useful both for quick capture and for building a long-lived archive.
People choose it because the structure is flexible: you can create multiple notebooks for different areas of life or work, subdivide them into sections, and keep pages in a natural hierarchy. It also fits well into Microsoft ecosystems, where notes often connect to documents, spreadsheets, and presentations. In practice, OneNote feels faster when navigation and formatting are keyboard-driven—especially when you’re capturing ideas in real time during a meeting or lecture.