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Download SWI-Prolog stable versions

linux.png Linux versions are often available as a package for your distribution. We collect information about available packages and issues for building on specific distros here. We provide a PPA for Ubuntu and snap images

Android.png Android binaries are available for Termux as the package swi-prolog. See also Building SWI-Prolog on Android using LinuxOnAndroid

windows.jpg Please check the windows release notes (also in the SWI-Prolog startup menu of your installed version) for details.

WIP.png Examine the ChangeLog.

Windows version (64-bits)13,817,587 bytesSWI-Prolog 9.2.5-1 for Microsoft Windows (64 bit)

Self-installing executable for Microsoft Windows 64-bit editions.

Windows version (32-bits)13,836,452 bytesSWI-Prolog 9.2.5-1 for Microsoft Windows (32 bit)

Self-installing executable for Microsoft Windows 32-bit editions. Version 9.3 is that last version of SWI-Prolog that is also released for 32-bit. Note that this version lacks the Janus interface to Python.

MacOS bundle39,830,558 bytesSWI-Prolog 9.2.5-1 for MacOSX 10.14 (Mojave) and later on x86_64 and arm64

Mac OS X disk image with relocatable application bundle. Needs xquartz (X11) installed for running the development tools. The bundle also provides the commandline tools in the Contents/MacOS directory. Users of older MacOS versions are adviced to use Macports, Homebrew or install from source. This bundle contains universal (fat) binaries that run natively on Intel (x86_64) and Apple Silicon (M1-3, arm64).

MacOS bundle33,390,471 bytesSWI-Prolog 9.2.5-1 for MacOSX bundle on intel

Mac OS X disk image with relocatable application bundle. Needs xquartz. Same as the fat bundle, but only contains the x86_64 binaries, compiled using gcc13 from Macports. This version is 30-40% faster than the fat binaries on Intel Macs. The intel version is not regularly updated.

Source archive12,271,144 bytesSWI-Prolog source for 9.2.5

Sources in .tar.gz format, including packages and generated documentation files. See build instructions.

PDF file3,301,882 bytesSWI-Prolog 9.2.5 reference manual in PDF

SWI-Prolog reference manual as PDF file. This does not include the package documentation.

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SWI-Prolog version 9.2

The SWI-Prolog 9.2 is the latest stable release. Highlights:

  • Bundled Python bi-directional interface (Janus)
  • C++ interface version 2 (SWI-ccp2.h) covers much more of the SWI-Prolog C API and is more (type-)safe.
  • Sources are now strict C11 and may be compiled using e.g. VS2022 on Windows.
  • Many improvements to the tooling.
    • The profiler can provide accurate port counts
    • The coverage analysis tool can annotate files by line and collect data from multiple threads and Prolog runs.
    • The unit testing tool supports concurrent testing and hiding of output of succeeded tests.
    • The pack manager can deal with version and feature restrictions, plan multiple packs together, build using CMake.
  • Added an option for commandline tools that can be called as swipl <tool> [arg ...]. Provides cli tools for pack management and `.qlf` compilation.