SWI-Prolog offers a comprehensive free Prolog environment. Since its start in 1987, SWI-Prolog development has been driven by the needs of real world applications.

Prolog is a Turing-complete, general-purpose programming language, which is well-suited for intelligent knowledge-processing applications. Timeline of some early Prolog systems, up to the ISO Standard.

Jul 11, 2025 · Unlike many other programming languages, Prolog is intended primarily as a declarative programming language. In prolog, logic is expressed as relations (called as Facts and Rules).

This Prolog tutorial is designed for aspiring developers with a need to understand the Prolog in enough detail along with its simple overview and practical examples.

Feb 9, 2025 · Prolog (Programming in Logic) is a declarative logic programming language. Unlike imperative languages (like C++ or Java) which specify how to solve a problem step-by-step, Prolog …

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Apr 2, 2025 · What Is Prolog? Prolog is a declarative and logic programming language designed for developing logic-based AI applications. Developers can set rules and facts around a problem, and …

Jun 16, 2025 · Start your journey with Prolog, a powerful logic programming language, with our beginner-friendly guide that covers the essentials and beyond.

The Online Prolog Community, sponsored by the Association for Logic Programming, hosts several initiatives around the Prolog language, mostly stemming from the Year of Prolog activities.

Using the GIT repository is recommended if you want to stay up to date and expecially if you plan to develop C/C++ resources for SWI-Prolog. See the build instructions. New releases are announced …