A shameless copy from the user documentation:
A-Gen is a web album generator tool that generates static web pages from templates. Templates are just like normal HTML-files with some minor markup for the template processor. The program takes a template and a set of pictures and outputs a directory containing a web album consisting of static HTML pages.
With A-Gen you can create static web albums feasible for use directly from a directory. Therefore you are not bound to using a webserver (although you can of course put such an album into a directory served by a webserver). As the album consists of static HTML files only, no further software is needed (apart from a browser of course). These albums should be so easy to use, you could even send one your mother-in-law without getting badly hurt (ok, depends on the contents of your album).
Visit the demo album to view A-Gen's output created with the standard template. (Pictures taken at ega Erfurt. Nice place. In case you are anywhere near there, drop by and take a break [or stress you and your camera with some shoots in the butterfly and tropical houses])
Goto A-Gen's download page.
Read the user documentation to get further informations about the requirements and usage of A-Gen.
Please direct all requests to a-gen@slash-me.net. Please be sure to include the string "[a-gen]" in your subject as the address may be severely filtered.