LinPHA is an easy to use, multilingual, flexible photo/image archive/album/gallery written in PHP. It uses a SQL database to store information about your pictures. It comes with a HTML based installer, so you don't need experience in setting up SQL
PennAve is a dynamic photo gallery software written in Python and designed for use alongside F-Spot. It makes heavy use of XML and XSLT for ease of presentation modification and sharing of information with other users, web sites, and programs.