phpMyGPX is a Web application based on PHP, MySQL, and OpenLayers to manage photos and GPX files with a browser, on your local machine or online, to share your tracks and images. GPX is an XML file format containing track points and routes collected by GPS receivers, and is very popular with navigation, geocaching, and OpenStreetMap.
Free Reservation System is an online travel agency Web application for hotel reservations. It allows users to reserve hotels through a Web application and allows hotels to publish availabilities and rate plans through a backoffice applet. It incorporates online maps from OpenStreetMap, Google, and Nokia. Login is supported with Google Identity Toolkit, XING, and Mozilla Persona. It also offers a framework of connectors for the GDS and CRS backends used by the travel industry. Currently, only one connector has been implemented, and it is not currently available due to licensing restrictions. This software is not suitable for the computer illiterate, and may require some programming skills to maintain the system and to tweak it for individual goals.