KLIC Association Develops and popularizes KLIC implementation of concurrent and parallel logic programming language KL1, and related software. Designed in the Fifth Generation Computer Systems (FGCS) project, by Institute for New Generation Computer Technology (ICOT), Japan. Free software. http://www.klic.org/

University: Imperial College: Logic Programming Group Department of Computing, Imperial College of Science, Technology and Medicine, University of London: group information, software, manuals, FAQs, ALP link, LP links. http://www-lp.doc.ic.ac.uk/

XSB 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. http://xsb.sourceforge.net/

Xcerpt A logic-based query and transformation language for XML and semistructured data. http://xcerpt.org/

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. http://www.cs.hut.fi/~enu/exbed/xe.html

DBLP: Logic Programming A bibliography on logic programming is supplemented with a survey of conferences, journals, series of books, organizations and related subjects. http://www.informatik.uni-trier.de/~ley/db/conf/indexl.html

The World Wide Web Virtual Library: Logic Programming Affiliated with the comp.lang.prolog newsgroup this repository includes general information, Prolog, Window system interfaces, other logic-programming systems, meetings, books and related information. http://www.afm.sbu.ac.uk/logic-prog/

Special Interest Group on Logic Programming and Nonmonotonic Reasoning: LPNMR Forum for exchange of information on the area of logic programming (LP) and nonmonotonic reasoning (NR): questions in LP related to NR, and in aspects of NR that bear directly on LP: definitions, links to software and related sites. http://www.cs.engr.uky.edu/~lpnmr/

The Maude System Maude is a reflective language based on equational rewrite principles, useful for modeling and solving a wide range of computational problems. http://maude.cs.uiuc.edu/

Kiev: Java compiler with logic extensions This open-source language licensed under GPL is a superset of Java with Prolog-like extensions. http://www.forestro.com/kiev/index.html

SampleTalk Language and programming technology Build a program immediately from data processing examples: AI language, simpler than Prolog, based on generalization and matching of unconstrained text processing samples. http://sampletalk.8m.com/

PC AI - Logic Programming As part of a survey of information on artificial intelligence this section on logic programming is provided. http://www.pcai.com/web/ai_info/logic_programming.html

Starlog Declarative temporal logic programming language for: general purpose programming, simulation, modeling reactive systems. Starlog programs consist of 2 components: a set of timed facts, a set of temporal logic rules. Somewhat like Prolog. http://www.cs.waikato.ac.nz/Research/starlog/index.html

Conferences: Logic-Related In the last few years, ever more events overlapping in technical scope with LICS (Symposium on Logic in Computer Science) are scheduled with no coordination, often causing conflicts: 1995 LICS and FPCA were at the exact same time and place. This page attempts to aid coordination. http://cm.bell-labs.com/cm/cs/who/libkin/lics/logic-confs.html

LPNMR FTP Archive Logic programming papers. ftp://ftp.ms.uky.edu/pub/lpnmr/

Logic-Based Systems Lab Department of Computer and Information Science, Brooklyn College of the City University of New York. Home of the 2LP Language, runs on Linux, RS6000, SGI, Solaris, SunOS, Windows; download yours now. Free. Cool logo. http://www.sci.brooklyn.cuny.edu/~lbslab/

TyRuBa Type Rule Base is an experimental logic/metaprogramming language for generating Java code. This BSD-licensed free software resembles Prolog, is implemented in Java and provides a simple command-line interface. http://tyruba.sourceforge.net/

COMPULOG NET: Network of Excellence: NoE Information on European ESPRIT Basic Research (funded) NoE, concerned with computational logic. Large community of European researchers, over 80 nodes at leading universities, businesses. http://archive.museophile.sbu.ac.uk/compulog/

What are Logic Programming and Prolog? Clear explanation of logic programming, and merits of declarative languages. http://www.biocheminfo.org/moirai/cs_magenta/prolog.html

Axiomatic Language A pure, minimal but extensible, logic-programming/specification language with meta-language capability is described. The paradigm involved explicitly separates declarative specification from ensuing transformation. http://www.axiomaticlanguage.org/