I want to say there was a product that did this circa 2006-2008 but all I’m finding is the .NET Micro Framework and its modern successor the .NET nano Framework

I want to say there was a product that did this circa 2006-2008 but all I’m finding is the .NET Micro Framework and its modern successor the .NET nano Framework. I’ve been using .NET since 2001 so maybe I have it confused with something else, but at the same time a lot of the web from that era is just gone, so it’s possible something like this did exist but didn’t gain any traction and is now lost to the ether.