Is there any good out-of-the-box Expert System Engine?

Question

I am looking into Expert Systems - just wondering if there are any good engines (commercial or open) available to facilitate development of a custom expert system (rather than building the whole thing from scratch).

Answer 1

Of course, the classic (free) expert systems shell is CLIPS.

-m

Answer 2

In the business world these are typically called Rules Engines. I've worked with the one from Haley Systems - they were acquired by Oracle last year (http://www.oracle.com/haley/index.html)

Another one that I've seen is ILog

Also, for Net there's one called inrule.

Answer 3

The best rule-processing system that I know of is JBoss Rules (also known as Drools). You can integrate program components in the rules, integrate rule-bases in program components, and even build / modify rule-bases on the fly.

You might also be interested in a system conceived from addressing the limitations of rule-based expert systems called High Level Logic (HLL). http://highlevellogic.blogspot.com/

Answer 4

Prolog is excellent for writing expert systems.

Answer 5

Jess should also be considered. Very good support on the mailing list.

Answer 6

computer associates has an aion business rule system http://www.ca.com/us/products/product.aspx?id=250

dont know how many ppl use it nowadays...