.AS2PROJ File Extension
File TypeFlashDevelop ActionScript 2 Project File
What is an AS2PROJ file?
Project file created by FlashDevelop, an free and open source development IDE commonly used for Flash programming; saved in an XML format and contains build settings, references to project source code files, and output .SWF options.
ActionScript 2 projects can be created by choosingin the software. The AS2PROJ file and the other project files and directories are saved to the directory that you specify in the New Project window that appears.