And for readers who may not have been Mac users at the time, RAM Doubler was legit.
https://tidbits.com/2019/01/24/25-years-ago-in-tidbits-ram-d...
"Developed by Connectix, RAM Doubler was one of the most magical utilities of the early days of the Macintosh. As its name suggested, RAM Doubler promised to double the amount of usable RAM in your Mac, and amazingly, it generally delivered."