Evernote is a popular note taking application available for most of the mobile platforms. Now Evernote has released a new version for Windows Phone 7 as well. Evernote for Windows Phone 7 lets you save and find your ideas and memories any time, anywhere and it syncs with other versions of Evernote you use.
All screens of the Evernote for Windows Phone 7 app have options in the Application Bar and Application Bar menu that provide additional functionality related to the screen you’re visiting, or expose advanced features. Whenever you see three dots in the Application Bar, tap them to show more options.
You can download the Evernote app from marketplace. Search for “Evernote” using the Marketplace application on your Windows Phone 7.
More details here.