For Mac users, open up iPhoto, then select iCloud, or, depending upon your settings, select the most recent Photo Stream uploads. If all you want to do is show off your Photo Stream photos and do it quickly on a Mac, just use MyPhotoStream.
Not Much, Priced Right
To put it bluntly, MyPhotoStream is merely a photo viewer, a browser, a very simple application–for the photos you have stored on iCloud’s Photo Stream.
That means you can browse Photo Stream, view specific photos, and even receive notices in Notification Center when new photos are added.
MyPhotoStream won’t muck around with the photos in Photo Stream. It’s read only so you won’t be able to upload new photos.
By using MyPhotoStream on your Mac you won’t have to dig into iPhoto just to show off a few recent photos.
When I say MyPhotoStream is simple, that’s what I mean. It won’t create new albums but it will share photos via Mail, Messages, AirDrop, Twitter, Flickr, or Facebook. It will display, in chronological order, the photos stored in your iCloud account’s Photo Stream.
MyPhotoStream is not completely devoid of additional features to help justify the price tag.
Photos can be downloaded from iCloud to your Mac (ostensibly, they should already be in iPhoto’s library, but whatever; drag and drop works, too).
The Notification Center notification feature is handy, especially if you have a shared iCloud account. Photos taken by others using the same account will trigger the notice.
And, that’s about it. The app is not available on the Mac App Store, and there is a 30-day limited by free trial version.