Search The Directory The Web for Home > Computers > Programming > Languages > Logic-based New! Submit a site   whatUseek Directory Site Listings:   XE - Resulting from the Exbed project, this general-purpose programming language supports data abstraction and rule-based programming and is based on but is not a formal extension of CLU.   XSB - XSB is a research-oriented Logic Programming system for Unix and Windows/DOS-based systems, representing a semantically enriched functional superset of Prolog and offering among other things evaluation through full SLG resolution.     [ 1 2 ] Help build the largest human-edited directory on the web.   Submit a Site - Open Directory Project - Become an Editor

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