The latest release of Jess, Jess 6.1a5, is available for download at the
usual place:
http://herzberg.ca.sandia.gov/jess
Jess is a fast, lightweight rule engine and scripting environment for
Java developed by Ernest Friedman-Hill at Sandia National Laboratories.
The latest version fixes a number of bugs and greatly improves
performance compared to 6.1a4. From the change log:
Fixed a bug with direct matching of fact bindings (thanks Morten
Vigel). Fixed a typo in Node1TNEV1 (Ralph Grove.) Added "synchronized"
and "get-strategy" functions. Calling "set-strategy" now changes the
default strategy for new modules. Fixed a deadlock in defquery (thanks
Chad Loder.) Public interface "Test" renamed to "TestBase." Fixed bug in
pretty-printing of deftemplates. Performance is back up to 6.0
equivalent or better.
Jess is available for commercial licensing and is free for academic use.
Contact Craig Smith, cas...@sandia.gov, for prices and licensing terms.
A trial version is also available at the Jess web site.
As usual, comments and questions are welcome at ejf...@ca.sandia.gov.