CityWriter is an open source php web application that was originally released in January 2007. The goal of this application is to provide listings for city resources, whether they be night clubs, libraries, stores, music venues, etc. This application is Open Source, under the GPL(GNU Public License), which can be found here
Features
Fully Featured Location Listing Service Dynamic Daily/Weekly/Monthly Event Notification System Multiple Picture Support For each Location Optional Wiki Membership Newsletter Notification
There was a security issue in version 0.9.7 that exploited php's register_globals setting. If
this setting was enabled and you were running 0.9.7, citywriter would be succeptible to remote
file includes. This issue is fixed in 0.9.8, and versions 0.9.7 and below can be secured by
disabling register_globals.