Show Your Places
Show Your Places is a web software used to set up a photo galery with openstreetmap. The website shows a map with markers matching picture locations. When selecting a marker, visitors can see image and its description.
It can be used to present your holidays or travels pictures, to promote interesting places in your area, to show different places of a convention, to prepare a hunt game, or anything you can think of.
On the technical side, it's created in php, so it can be installed on many hosting services. Data is stored in a mysql or a postgres database, and is output in kml format. It uses openlayers, and jquery for admin page.