From yesterday, Microsoft OneNote is available for free on Windows and OS X. OneNote was previously available for Windows as part of the Microsoft Office suite (or standalone, for a price). The OS X version is brand new and available from the App Store, but from what I’ve seen so far, it works well. There are also versions available for a variety of mobile devices, which were already free.
OneNote makes it easy to throw a document together. The “page” and “tab” system allows for quick and easy organization of material. You can use it to make a simple “wiki” to store documentation on projects. With OneDrive for syncing, you can easy share or collaborate with others and keep your data consistent between devices.
OS X support was a missing piece before and the main reason I couldn’t use this more globally in the office. Glad to see them finally make it available (and free at that).