DO NOT INSTALL. This is Abandonware. It hasn't worked in Safari for years.
For incomprehensible reasons, MU is currently listing GLIMS as "Popular Recent" software. NO IT'S NOT! The developer abandoned it four+ years ago (as of the moment) and will NOT be updating it. GLIMS does NOT work on may modern Mac, specifically any Mac running macOS 10.10 or above.
Before it died, GLIMS had gone the sad way of becoming adware. A tragedy.