PGN Mentor 5.0 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This program is a product of 64 Squares. This PC program works fine with 32-bit versions of Windows XP/Vista/7/8/10/11.
The software lies within Games, more precisely Strategy. We recommend checking the downloaded files with any free antivirus. The program's installer file is commonly found as pgnment.exe. The most popular versions among the software users are 5.0 and 4.0.
From the developer:
PGN Mentor is a program for viewing, searching, and analyzing chess games. This application has a large ECO opening book database, with over 13,400 individual lines. You can download various chess games a PGN files from the developer site. Its tree organization mode for PGN files and ECO code openings allow you to browse them easily.
You may want to check out more software, such as ChessTool PGN, Blackjack Mentor or DC Audio Mentor, which might be similar to PGN Mentor.