Barclay Program 9 was a holoprogram created by Reginald Barclay as of 2366.
Although he deleted his other programs after receiving counseling from Deanna Troi regarding his holo-addiction, he nevertheless chose to keep this one. (TNG: "Hollow Pursuits")
The Strange New Worlds VII short story "Barclay Program Nine (β)" has a Ferengi named Balt (β) sell this program to Quark.