The Application Express installation includes two Java programs that enable you to perform either complete application exports or component exports. More details on these Java programs are available in the utilities / readme.txt file included within the installation. These programs are best utilized as part of a CRON job, or similar, that runs nightly and places the exports directly into a source control system. The exported files should be used as backups in case of a database corruption, etc. It is still best to manually export applications and check them into source control for deploying the applications.