OneNote

OneNote is Microsoft's take on the digital notebook: a freeform canvas where text, handwriting, images, audio, and files can live side by side on the same page. It is free with a Microsoft account, and it has been part of the Office family since 2003, though you no longer need to buy anything to use it.

The structure mirrors a paper binder. Notebooks contain sections, sections contain pages, and pages can be nested into sub-pages. Inside a page there are no rules: click anywhere and start typing, sketch with a pen, paste a screenshot, record a voice memo, or drop in a PDF and annotate it. That freedom is OneNote's biggest strength and its biggest learning curve - people used to linear documents sometimes find the anything-anywhere canvas disorienting at first.

Search goes further than most note apps. OneNote indexes typed text, handwritten ink, text inside images and scanned documents (via OCR), and even spoken words in audio recordings, so a notebook with years of material stays findable. Tags let you mark items as to-dos, important, or questions and then collect them across notebooks.

Sync runs through OneDrive: notes are available on Windows, macOS, iOS, Android, and the web app at onenote.com, with real-time co-authoring when a notebook is shared. There is no native Linux client; on Linux the web app is the way in. The free OneDrive tier includes 5 GB of storage, which covers a lot of text notes but can fill up if you embed large files or recordings.

One thing to know before downloading on Windows: the older "OneNote for Windows 10" app reached end of support on October 14, 2025 and has gone read-only. The app to install now is simply called OneNote (the desktop app also included with Microsoft 365), available free from Microsoft's site. Your notebooks carry over, since everything lives in OneDrive.

OneNote plays nicely with the rest of Microsoft's world: meetings from Outlook can land on a page, Teams can share notebooks, and a web clipper extension saves articles straight into a section. Export options are weaker - you can get pages out as PDF or packaged archives, but there is no clean path to Markdown or other note apps, which makes leaving harder than joining.

For students, meeting-heavy jobs, and anyone who thinks in sketches and clippings rather than documents, OneNote remains one of the most capable free notebooks around. Just accept that your notes live in Microsoft's format and cloud.