"copied from Jim Mason's website"  ***

Download Software

This page has instructions on how to install ASD source code and/or jar files from archives.

You are free to download and use the tools and examples at this site, with appropriate acknowledgment of their origin, and for those licensed under the Apache 2.0 license, in compliance with the terms of that license.  The tools and examples are provided with no warranty expressed or implied.

This site now contains the latest versions of

  • ASDEditor (1.10a) - a graphical editor for ASD grammars.  To run it in Microsoft Windows with a Java Run-Time Environment (JRE) installed, download the asddigraphs.jar executable jar file (see below) and double-click on that file.
  • ASDParser (2.01) - a left-corner, bottom-up parser that uses ASD grammars
  • ASDDecider (1.01) - a modification of ASDParser to permit ASD grammar networks to be used as decision networks, and to search them with unordered sets of decision parameter value tokens, instead of the ordered lists of lexical tokens which make up the phrases that ASDParser parses.

System Requirements


Make sure you have latest Java SDK  JRE  7  OpenSDK or later available and  browser enabled.  Generally, a newer Java version is better  with default settings.  See the howTo page


ASD 3.1