YAP is an open-source, high-performance implementation of the Prolog programming language developed at LIACC/Universidade do Porto and at COPPE Sistemas/UFRJ. Its Prolog engine is based in the WAM (Warren Abstract Machine), with several optimizations for better performance. YAP follows the Edinburgh tradition, and is largely compatible with the ISO-Prolog standard and with Quintus Prolog and SICStus Prolog. YAP has been developed since 1985. The original version was written in assembly, C and Prolog, and achieved high performance on m68k-based machines.

YAP Prolog
Stable release
6.3.3 / 21 January 2013; 11 years ago (2013-01-21)
Preview release
7.1 / 9 January 2016; 8 years ago (2016-01-09)
Operating systemLinux, Windows, Solaris, Mac OS X
PlatformProgramming language
LicensePerl Artistic License 2.0
Websitewww.dcc.fc.up.pt/~vsc/yap/

See also

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