I have ended development on Flightpath software. The project is being shelved (although the code will still be available) in favor of new projects.
One of those new projects is pacificpelican.us/cms. This free software is (like Flightpath) written in PHP. These are some of its features:
-listing and viewing pages for uploaded photos and files with perma-links
As you can see, pacificpelican.us/cms already has most of the key features of Flightpath in a much lighter and more efficient package.
Download the code from the pacificpelican.us cms development blog.