Today was a great day - we released "a metric ton" of new stuff. You can read all the details on the team's official blog.

At last we were able to unveil the new OneNote for Mac release. This is something many people have asked for over the years, and the team and I are stoked to finally make it available to you all.

Second, and maybe an even bigger deal, we made OneNote free on all platforms. Now you can get OneNote (for free! not a trial version!) on Windows 7 & 8 "Desktop", Windows 8 "Metro", Windows Phone, Mac, iPhone, iPad, Android, and we also have a version that runs in the browser. You can get all this stuff at www.onenote.com. There are a few extra goodies that come with a paid version, but I think you'll agree that the free version is a great deal. (and the paid version comes with all the rest of Office, for just $5.83/month at the annual rate, an extra 20GB of OneDrive storage, Skype minutes and more). That's a better deal than $5/mo for a single app....

Third, we released an API for our cloud service that lets developers connect to OneNote. We already have a number of partners - you can see them all here: http://www.onenote.com/apps. You can also use the API to mail notes to yourself at me@onenote.com, or get a "clipper" to add to your favorite browser that sends web pages to OneNote to help with web research.  If you are a developer interested in connecting to OneNote, check our portal on http://dev.onenote.com/.

Fourth, we released a new mobile app of our own called Office Lens that lets you scan documents and whiteboards directly into OneNote. It's available for now on Windows Phone only. Check it out!

With the free 7GB of OneDrive cloud storage available to anyone, you can stay in sync across all your devices with your notes and To-Dos, invite your family and friends to shared notebooks, and generally bask in the feeling of being on top of it all...

Today we hit #1 trending topic on FaceBook, #1 in productivity in the Mac app store (ahead of even the OS X Maverick download), and more than 50K pages sent to OneNote through our API before we could even have our party!

Here is the team celebrating today - as you can see St. Patrick's Day is all about purple for the OneNote team!

I thought I'd share some of the coverage we are getting - pretty great stuff - and love the comments - so positive!

The Next Web: Microsoft launches free OneNote for Mac, freemium OneNote for Windows, and OneNote cloud API for apps

The Verge: Microsoft launches OneNote for Mac, brings new features to note-taking service

Paul Thurrott's Supersite for Windows: It's Official: OneNote is Now Free for Everyone

ZDNet: Microsoft delivers free OneNote for Mac and Windows

SlashGear: OneNote for Mac launches with new Evernote-challenging tools

Engadget: Microsoft's OneNote goes completely free, launches for Macs

MacWorld: First look: Could Microsoft OneNote for Mac replace Evernote? (duh, of course it can - it was never displaced to begin with!)

GeekWire: Microsoft releases free OneNote for Mac, makes Windows version free, offers new cloud API

GottaBeMobile: Microsoft Brings OneNote to the Mac, Makes All Versions Free to Download

Lifehacker: OneNote Releases Mac Client, Web Clipper, IFTTT Support, and More