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Latest stable version: 3.31.0
Release date: October 15, 2019

Requirements

Logtalk runs on any operating-system with a standards compliant modern Prolog compiler. The interface between Logtalk and a specific backend Prolog compiler is accomplished using a small adapter file. The Logtalk distribution includes adapter files for all supported Prolog compilers:

Legacy Logtalk versions (2.x) provide support for several other Prolog compilers, which are no longer supported due to lack of compliance with official and de facto standards.

Be sure to install the Prolog systems that you want to use as backend compilers before installing Logtalk. In general, it is recommended that you install the most recent versions of the Prolog systems.

License

Logtalk is an open source programming language, distributed under the Apache License 2.0. The copyright notice and license applies to all files in this release (including sources, documentation, and examples) unless otherwise explicitly stated (see the NOTICE.txt file for details on bundled third-party resources).

Git repo

The Logtalk git repo is currently hosted at GitHub. Follow these steps for running Logtalk development versions. See the release notes for the latest changes.

You may keep up to date on development changes by subscribing to the Logtalk commits RSS feed.

Sources

logtalk-3.31.0.tar.bz2
e01ebb69fa8606c84f78d9cabcbaf88d2607d7a7dcece4198619befca7955e33 (SHA-256)

Includes the HTML versions of the Handbook and the APIs documentation. The bundled INSTALL.md file contains manual installation instructions.

Installers

Be sure to read the README.md, CUSTOMIZE.md, and QUICK_START.md files on the Logtalk user directory for important information, including instructions on how to customize and run Logtalk. For Windows users, this information is also available from the Logtalk program group in the Start Menu.

The following installers are available for the latest version:

macOS

Based on the MacPorts portfile. Installs Logtalk on /opt/local/share/ with integration scripts for supported Prolog compilers on /opt/local/bin. Creates an /Applications/Logtalk folder with links to the installed files.

logtalk-3.31.0.pkg.zip
c69558a66742dcaa0ce7c216e753fbe304b93c3baa6a2d9672d46e4621a3193f (SHA-256)

A MacPorts portfile is also available. Users may simply type the command sudo port install logtalk (or sudo port upgrade logtalk) in order to install (or upgrade) Logtalk. Homebrew users may simply type the command brew install logtalk (or brew upgrade logtalk) in order to install (or upgrade) Logtalk. But do check first that the MacPorts portfile and the Homebrew formula are up-to-date.

Linux

Installs Logtalk on /usr/local/share with integration scripts for supported Prolog compilers on /usr/local/bin.

logtalk-3.31.0-1.noarch.rpm
2be5a7512d4595836824998119c26b81014f095376cf047f2a7364c658b2b0db (SHA-256)

Package installation from the command-line is recommended:

$ sudo rpm -i logtalk-3.31.0-1.noarch.rpm

Debian (e.g. Ubuntu)

Requires dpkg 1.15.0 or a later version. Installs Logtalk on /usr/share with integration scripts for supported Prolog compilers on /usr/bin.

logtalk_3.31.0-1_all.deb
e4e17cb84241327b1d27b34c90d6f75055c4ba93541a72171deb62c03d926063 (SHA-256)

Package installation from the command-line is recommended:

$ sudo dpkg -i logtalk_3.31.0-1_all.deb

Windows

Be sure to install a compatible Prolog compiler before running the Logtalk installer. Creates a Logtalk program group in the Start Menu with integration shortcuts for supported Prolog compilers and shortcuts for the accessing the Logtalk documentation. Can be used by both admin and non-admin users.

logtalk-3.31.0.exe
5fcdee64dd33690813e43e75ee9968fcdf9093b6f4869726ba1c3a73b2dd83cf (SHA-256)

Logtalk is also available as a Chocolatey package and can be installed using the choco install logtalk command. Alternatively, on Windows 10 or Windows Server 2019, you can use the Windows Subsystem for Linux (WSL) and install Logtalk using one of the Linux installers listed above.

Automatically generated installers for the latest git versions can be download from AppVeyor.

SWI-Prolog packs

Logtalk is also available as a SWI-Prolog pack. The pack is handy for deployment but not ideal for development, however, as all the files in the distribution are buried in a relatively deep sub-directory. The pack can be easily installed typing the query pack_install(logtalk) at the top-level (use the pack_info(logtalk) query after installation to find the installation directory). Also available as a manual download:

logtalk-3.31.0.tgz
c83e49877495454ee567ec363327c0504d5269c2109a318d7a93a9a9fe64e521 (SHA-256)

There’s also an experimental pack that encapsulates de Logtalk compiler and runtime in a logtalk module. This pack is only available as a manual download:

logtalk-experimental-3.31.0.tgz
ac700b1f3ed94ce0f20935f9c302cf0bcbe65325da74e87c78f9e1ca610e757b (SHA-256)

Arch Linux package

Logtalk is also available as an Arch Linux package contributed by Ebrahim Azarisooreh.

Documentation

HTML, ePub, PDF, and Texinfo versions of the Handbook (includes a tutorial, the User Manual, the Reference Manual, and the FAQ). Note that the HTML version is included in the source and binary packages.

logtalk-manuals-3.31.0.tgz
36951c5d4b2acef37fa25d2ad148d39cea3757ea14472765689976dba35f42b1 (SHA-256)

Docker images

Nightly and stable Docker images are available using selected backend Prolog compilers.

Older versions

Older releases are available here (but note that time stamps do not match the release dates due to all the moving of these files between servers along the years).

Sponsorship

If you want to express you appreciation for Logtalk and help keep it a sustainable project, your sponsorship is much appreciated. Sponsorship monthly tiers start at a symbolic $2 per month to hopefully allow everyone to show their love and support for Logtalk.

Registration

Consider registering if you become a Logtalk user.