ASDEditor

ASDEditor,  the main ASD tool for creating and manipulating  grammars, can be explored and tested on JavaWebStart (JWS), technology which supports complete execution of stand-alone Java applications independently through the Web browser or on the desktop, via the Java Network Launch Protocol (JNLP). The ASDEditor Java Web Start runs on Oracle Java 6 and later and compatible with OpenJDK 6 and later as well.  More details about JWS on their deployment instructions' web site. Is your browser JAVA enabled?  This page will let you know. The ASDEditor can be launched from  here