Juicebox
Juicebox is the ultimate HTML Image Gallery. Juicebox is a free, downloadable image gallery creation app. It also comes in a paid Pro version that enables additional features. I am the founder, CEO and lead designer of a team that builds and maintains Juicebox and it’s sister CMS product Showkase.
SimpleViewer
SimpleViewer.net is the home of the SimpleViewer family of image viewers – professional quality, fully customizable Flash image galleries. These galleries come in a free version and a pro paid version. The free versions are downloaded over 15,000 times a week.