JPEG Saver has all of the features of the My Pictures Slideshow and much more. This free download will handle enormous picture collections (at least 68,000 photos), can display details about the photo (size, date, etc) and has numerous ways to sequence your picture collection. This man has turned his frustrations with the Windows slideshow into a benefit for everyone!
This slideshow screensaver comes in two versions: Free and Pro. The latter will cost you 14.95 in Euros. See a feature comparison between the two on the gPhotoShow web site. The free version offers a lot and may offer everything you need. It includes transitions, multiple folders, background music playback and more. Two big things the free version lacks: Movie playback and high quality image resizing (JPEG Saver above has high quality resampling). gPhotoShow has been around since 1999.
This screensaver was designed for users of earlier versions of Windows, such as Windows 98 and Windows 2000, which do not come with the My Pictures screensaver. It is more flexible and has more and cooler transitions than the My Pictures screensaver. It is also compatible with Windows XP, so if you are looking for a slideshow screensaver that works like My Pictures but has more options, Picsaver is for you.
Picasa, Google's photo management software, contains a slick little slideshow with breathtaking and spectacular effects. The "Pan and Zoom" mode makes your still pictures come to life. The "Collage" mode artfully shows several photos on the screen at once. Configuration options are more limited than the My Pictures Screensaver, though you can add multiple folders and even Internet photo feeds. The screensaver used to be available as a standalone download. Now Google requires you to download Picasa. Bummer!
This program contains a slideshow screensaver, though it has fewer features than My Pictures. If you are a Webshots user, the advantage to using this screensaver is that it is integrated with the photo libraries you create with the software.