Gallery is a web based software product that lets you manage your
photos on your own website. You must have your own website with PHP
support in order to install and use it. With Gallery you can easily
create and maintain albums of photos via an intuitive interface. Photo
management includes automatic thumbnail creation, image resizing,
rotation, ordering, captioning, searching and more. Albums can have
read, write and caption permissions per individual authenticated user
for an additional level of privacy. Give accounts to your friends and
family and let them upload and manage their own photos on your
website!

WWW: http://gallery.sourceforge.net/
