Our software library provides a free download of SWI-Prolog 8.2.1. The file size of the latest setup package available for download is 22.3 MB. Our antivirus scan shows that this download is malware free. The most popular versions among the software users are 8.2, 7.2 and 6.6.
You can execute this free PC program on Windows 7/8/10 32 and 64-bit. This free software is an intellectual property of SWI-Prolog. The most frequent installer filenames for the software include: PROLOG-64BIT.exe, swipl-win.exe, swipl.exe, w32pl622.exe and w32pl626.exe etc. The program is included in Development Tools.
From the developer:
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. SWI-Prolog is widely used in research and education as well as commercial applications.
You may want to check out more software, such as FlashDevelop, PHPEdit or Aqua Data Studio, which might be similar to SWI-Prolog.