Welcome to the official home of ARP, the Open Source Pattern-Based Rich Internet Application (RIA) Framework for the Flash Platform. ARP currently supports Macromedia® Flash® and Flex™-based RIA Development in ActionScript 2 and ActionScript 3. NEW: Arp now supports ActionScript 3. See Aral's blog post for more information. ARP was initially authored by Aral Balkan and is currently maintained and