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Logtalk is an Open-Source, object-oriented logic programming language that extends and leverages the Prolog language with a feature set suitable for programming in-the-large.

Logtalk supports modern code encapsulation and code reuse mechanisms without compromising the declarative programming features of Prolog. Logtalk is implemented in highly portable code and can use most modern and standards compliant Prolog implementations as a back-end compiler. The Logtalk distribution features portable libraries and portable assertions, documenting, diagraming, and unit testing tools, plus extensive code editing and

What's New

Version 3.09.0:
Logtalk Compiler and Runtime
  • [Changed] Settings files are now also looked up in the user home directory when not found in the startup directory or in the Logtalk user directory. Setting the settings_file flag to restrict now restricts searching for a settings file to the Logtalk user directory and the user home directory. This changes are useful when a


  • OS X 10.3.9 or later
  • Compatible Prolog compiler

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Current Version (3.x)


Downloads 8,714
Version Downloads 25
License Free
Date 28 Nov 2016
Platform OS X / Intel 32
Price Free
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