XSB
Website: Sourceforge.net
Designed by: David S. Warren, Terrance Swift, Kostis Sagonas
XSB is the name of a dialect of the Prolog programming language and its implementation developed at Stony Brook University in collaboration with the Katholieke Universiteit Leuven, the New University of Lisbon, Uppsala University and software vendor XSB, Inc.
XSB extends Prolog with tabled resolution and HiLog.
The open source XSB implementation includes an interface to the Java programming language.