Windows 7 ebook reader with cloud syncing - .mobi, .epub, .pdf [closed]

What software are available for reading .mobi, .epub and .pdf files on a Windows 7 PC? (free or paid) Cloud syncing features would be great - to have all my books and annotations synced across several computers.


Solution 1:

Mobipocket Reader Desktop (free)

Solution 2:

Adobe Digital Editions is fairly nice, supports various formats, allows annotations, and can sync changes.