Open Source Prolog Software

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Browse free open source Prolog Software and projects below. Use the toggles on the left to filter open source Prolog Software by OS, license, language, programming language, and project status.

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    Automate contact and company data extraction

    Build lead generation pipelines that pull emails, phone numbers, and company details from directories, maps, social platforms. Full API access.

    Generate leads at scale without building or maintaining scrapers. Use 10,000+ ready-made tools that handle authentication, pagination, and anti-bot protection. Pull data from business directories, social profiles, and public sources, then export to your CRM or database via API. Schedule recurring extractions, enrich existing datasets, and integrate with your workflows.
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  • 1

    C#Prolog

    C#Prolog -- A Prolog interpreter written in managed C#

    C#Prolog -- A Prolog interpreter written in C#. Can easily be integrated in C# programs. Characteristics: reliable and fairly fast interpreter, command line interface, Windows-interface, builtin DCG, XML- and JSON-predicates, SQL-predicates, extendible.
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    Downloads: 38 This Week
    Last Update:
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  • 2
    GNU Prolog

    GNU Prolog

    The GNU Prolog native compiler

    GNU Prolog is a free implementation (under GPL) of the logic programming language PROLOG. It can compile to native machine code which is extremely fast in execution. Another feature is the included constraint solver.
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    Downloads: 129 This Week
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  • 3
    XSB
    Logic Programming and Deductive Database system (Tabled Prolog) for Unix, Mac, and Windows.
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    Downloads: 71 This Week
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  • 4

    Datalog Educational System

    Deductive Database with Datalog, SQL, RA, TRC, DRC

    The Datalog Educational System (DES) is a deductive database with Datalog, SQL, Relational Algebra, Tuple Relational Calculus and Domain Relational Calculus as query languages developed mainly for education. It can be used from most common Prolog interpreters over any supported OS and from portable executables (Windows, Linux and MacOS).
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    Downloads: 98 This Week
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    Failed Payment Recovery for Subscription Businesses

    For subscription companies searching for a failed payment recovery solution to grow revenue, and retain customers.

    FlexPay’s innovative platform uses multiple technologies to achieve the highest number of retained customers, resulting in reduced involuntary churn, longer life span after recovery, and higher revenue. Leading brands like LegalZoom, Hooked on Phonics, and ClinicSense trust FlexPay to recover failed payments, reduce churn, and increase customer lifetime value.
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  • 5
    ECLiPSe CLP

    ECLiPSe CLP

    ECLiPSe Constraint Logic Programming System

    The ECLiPSe Constraint Logic Programming System is designed for solving combinatorial optimization problems, for the development of new constraint solver technology and their hybrids, and for the teaching of modelling, solving and search techniques.
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    Downloads: 34 This Week
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  • 6
    weed

    weed

    Heavily Xchat inspired beautiful irssi theme

    weed is a visually appealing theme for the irssi IRC client, inspired by XChat. It offers a modern and customizable interface, enhancing the user experience for irssi users who prefer a more aesthetic layout.​
    Downloads: 2 This Week
    Last Update:
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  • 7
    TerminusDB

    TerminusDB

    TerminusDB is a distributed database with a collaboration model

    A distributed document-oriented graph database with powerful version control, enabling collaboration and efficient knowledge graph management.
    Downloads: 1 This Week
    Last Update:
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  • 8
    Prosper is a web application development framework to augment Prolog applications with a web interface. It supports control flow in visual logic and promotes a clear separation of model from view.
    Downloads: 24 This Week
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  • 9
    Flora-2
    Flora-2 is a powerful knowledge representation and reasoning system designed for building knowledge-intensive applications. It is based on F-logic, HiLog, Transaction Logic, and also supports defeasible reasoning. Applications include intelligent agents, Semantic Web, ontology management, and more. If you use Flora-2 and like it, please acknowledge it in your project!
    Downloads: 6 This Week
    Last Update:
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    Create and run cloud-based virtual machines.

    Secure and customizable compute service that lets you create and run virtual machines.

    Computing infrastructure in predefined or custom machine sizes to accelerate your cloud transformation. General purpose (E2, N1, N2, N2D) machines provide a good balance of price and performance. Compute optimized (C2) machines offer high-end vCPU performance for compute-intensive workloads. Memory optimized (M2) machines offer the highest memory and are great for in-memory databases. Accelerator optimized (A2) machines are based on the A100 GPU, for very demanding applications.
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  • 10
    EZOP is a category representing educational system.
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    Downloads: 16 This Week
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  • 11
    Programming Language ADP

    Programming Language ADP

    ADP is a script language designed for Web database prgramming.

    ADP (Another Data Processor) is a programing language that is designed for Web database programing. It is a scripting language and a lightweight programming language in which it is possible to mix SQL easily. It is easy to install. ADP is base on Prolog. But ADP uses only the backtrack and unification. The syntax is original and likes a another scripting language, supports method call.
    Downloads: 16 This Week
    Last Update:
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  • 12
    Linguistic Tree Constructor

    Linguistic Tree Constructor

    Syntax tree editor for rapid annotation of existing text

    Linguistic Tree Constructor (LTC) is a tool for drawing lingusitic syntax trees of already-existing text. It is a syntax editor, not a text editor, so the text has to exist already. It is best suited for large-scale, rapid creation of hand-annotated treebanks. The user can define their own node categories, and can label each node with labels, also definable by the user. LTC supports "generic", X-Bar and RRG trees. Supports interlinear texts in SIL SFM format.
    Downloads: 4 This Week
    Last Update:
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  • 13
    A group of systems for building network-oriented intelligent agents, consisting an agent communications infrastructure, April - an agent construction programming language, Go! - a logic programming language and DialoX - an XML-based user interface engine
    Downloads: 5 This Week
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  • 14
    ConceptBase.cc

    ConceptBase.cc

    A Database System for Metamodeling and Method Engineering

    ConceptBase.cc is a multi-user deductive and object-oriented database system for metamodeling and method engineering. Includes a graphical client that builds upon the logic-based features of the ConceptBase.cc server. The data model is O-Telos. ConceptBase.cc can represent information at the data level (example data, traces of process executions etc.), the class level (schemas, process definitions etc.), the metaclass level (constructs of modeling languages), the meta-metaclass level (constructs for defining modeling languages), and so forth. ConceptBase.cc is developed by the ConceptBase Team at University of Skövde (HIS). ConceptBase.cc supports Linux, Mac OS X and Windows. ConceptBase.cc is free software distributed under a FreeBSD-style license.
    Downloads: 3 This Week
    Last Update:
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  • 15
    illness index

    illness index

    illness_index A Computer Program of a Medical Textbook.

    A computer scientist has attempted to program a textbook of British general practice (primary care) medicine, that is, Hodgkin K (1978) "Towards Earlier Diagnosis....", 4th Edition, Churchill Livingstone. If a patient types presenting findings (such as headache, cough), the program prompts the user for expansion/denial of appropriate findings, in order to construct a list of patient findings. The program also calculates a list of likely diseases, which the user can use the web to find out more about. The program has about 600 diseases and 1000 findings. Brought to you by Kit Free Software 2024 Ltd. Keywords - disease, health, healthcare, illnesses, illnessindex, illness_index.
    Downloads: 3 This Week
    Last Update:
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  • 16
    XGP is an integrated development environment that extends GNU Prolog to work with Cocoa under Macintosh OS X. It provides user interface and graphics facilities largely compatible with MacProlog32 by LPA. Requires Mac OS X version 10.2.1 or greater.
    Downloads: 2 This Week
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  • 17
    Component (library, framework) refactoring may affect existing applications, where the client code used previous component versions. Our tool preserves applications binary-compatible by generating an adaptation layer out of change history.
    Downloads: 1 This Week
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  • 18
    A lightweight IDE for Artificial Intelligence. Started as GUI for the Euler reasoning engine. The sources can be N3, RDF, OWL, UML, eCore, plain XML or XSD, files or URL's. Wraps Drools (or CWM, FuXi) as N3 rules engines. Model based app. generation.
    Downloads: 1 This Week
    Last Update:
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  • 19
    Some tools related to the Music Ontology - including domain-specific Semantic Web crawlers, audio collection management and mapping tools
    Downloads: 1 This Week
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  • 20
    Odin is a Tool that aims to be a didatic resource for AI Teachers. It lets students visualize PROLOG programs in 3D simulations.
    Downloads: 1 This Week
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  • 21

    ProLogic

    Prolog wrapper for BWAPI

    Enables Prolog developers to create AI modules for StarCraft BroodWar by wrapping the BWAPI functions in Prolog predicates. For more information refer to the Project Wiki.
    Downloads: 1 This Week
    Last Update:
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  • 22
    This is an implementation of a client/server-architecture poker(Limit Texas Hold'em) software in (SWI-)Prolog. It uses the extension XPCE for GUI's and sockets. Would gladly see users to help developing.
    Downloads: 1 This Week
    Last Update:
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  • 23
    TuCSoN

    TuCSoN

    TuCSoN tuple-based coordination middleware

    TuCSoN (Tuple Centres Spread over the Network) is a tuple-based middleware for the coordination of distributed systems – including multi-agent systems, mobile agents and pervasive systems.
    Downloads: 1 This Week
    Last Update:
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  • 24
    A Practical Agent Programming Language
    Downloads: 0 This Week
    Last Update:
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  • 25
    A Prolog expert system supporting querying and extending the knowledge base from a command-line interface using a format oriented on natural language, with the aim of being maintainable by the domain expert (i.e. without requiring programming skills).
    Downloads: 0 This Week
    Last Update:
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