OneNote arrives on Mac for free
The app also comes with a cloud API, allowing developers to integrate OneNote into a variety of other applications.
OneNote has arrived on Mac and will be available for free across platforms, ending weeks of speculation that an Apple-friendly version of the note-taking software would soon surface.
The application was previously available on PC, Windows Phone, Windows tablet, iPhone, iPad, Android phone and via a web experience.
OneNote allows you to take snippets of information from content such as web pages, take snapshots of documents or whiteboards and save all these in one place. You can also add notes to your saved files to ensure you don't miss a thought.
Microsoft also announced it will be opening up a cloud API for OneNote, allowing developers to integrate other apps with the software.
Some of the companies using the API include Feedly, News360 and Weave, allowing you to send blog and news articles to your existing accounts, Brother, Doxie Go, Epson, and Neat meaning you can scan your clippings and documents instantly and Livescribe to add notes using a pen and paper-like experience.
Other companies announcing partnerships with OneNote include IFTTT, Mod Notebooks, Genius Scan and JotNot.
David Rasmussen, partner group program manager at Microsoft, said in a blog post: "OneNote is more than just syncing your content across all your devices. It's now a hub for the applications and experiences you care about.
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"By making it easy to send anything from any application to OneNote, it's one more step towards becoming your digital memory. We've built some new experiences for this and we've worked with a bunch of partners to integrate it with their applications as well."
If you're using OneNote with Office 365 and Office 2013, Microsoft has opened up some premium features including SharePoint support, version history and Outlook integration.
All OneNote users have access to 7GB cloud storage for the app, with cross-platform synching so all your OneNote items are stored across devices that may have the app installed.
"Today is a huge step forward for OneNote. We've made it easier to use OneNote no matter what platform you're on, and easier than ever to send anything into OneNote. But we're not stopping here," Rasmussen added.
"We're continually improving OneNote across our applications and service, and working with partners so you can take note of anything and keep it in your digital memory."

Clare is the founder of Blue Cactus Digital, a digital marketing company that helps ethical and sustainability-focused businesses grow their customer base.
Prior to becoming a marketer, Clare was a journalist, working at a range of mobile device-focused outlets including Know Your Mobile before moving into freelance life.
As a freelance writer, she drew on her expertise in mobility to write features and guides for ITPro, as well as regularly writing news stories on a wide range of topics.
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