Slideshow Tools
Generates content that allows linear playback of a series of images, some with ability to add audio. But these are primarily organized around photos or graphics.

Imageloop
Upload images from computer or flickr or upload PowerPoint files. Select from animated templates. Publish to blog or MySpace. RSS, comments.

One True Media
"...effortlessly combine photos and video clips with words and music to personalize your story. Quickly share with our Online Slideshow or get as creative as you want with our Video Montage." Upload images and audio for story track. Embed in blogs or directly post to YouTube/Google video, mySpace, Google Groups. Great template choices.

Photo Peach
A very easy to use slide show maker tool. Import photos from flickr, picasa, Facebook (or upload), arrange, select music from library (or find from YouTube videos). Creates Ken Burns like pan and zoom effects. Add captions. When published, you can also post to Facebook or twitter.

RockYou
"RockYou! creates and distributes the most popular self-expression widgets on the web" where widgets are slideshows, image effects, and more. Publishes to MySpace, Facebook, blogs. (You have to scroll down to the bottom of the page to find the create slide show option.)

ShowBeyond
"A multimedia slidecast creator, online publishing platform and story sharing community."

Slide
"Slide lets you use photos and other digital content to publish and discover the people and things that matter to you." Import from many sources, has a good library of templates, backgrounds, effects. Can add music from library but not your own audio.

Slideoo
Creates horizontal slide shows from flickr sets ) no text or audio. Very, very easy to use.

SlideSix
Online slideshow maker.

Storybird
"Storybirds are short, visual stories that you make with family and friends to share and print."

Tikatok
Designed primarily for kids, the real purpose of Tikatok is to allow children to create their own story books, which can be shared or ultimately printed as a real book. Images or drawings can be uploaded, arranged, and placed within text. The site provides as an option story prompts to help guide the process. Final products can be viewed on the site or embedded. Users have reported the inability to save content in Firefox on Mac OSX / content lost.

Tar Heel Reader
Developed at the University of North Carolina Chapel Hill, this tool allows creation of a captioned slide show for beginning readers, with features designed for accessibility (text to speech, reader selected font and background colors) and offers downloads of stories in PowerPoint, Flash, and Impress Format. Pictures can be used directly from flickr, and the tool tracks the photo credits.