https://myrient.erista.me/ - main site
This is arguably the best site ever made for this kind of preservation. And they shutdown because of insufficient funding and increased prices for hardware. They have full sets for NoIntro, Redump, TOSEC, MAME, RetroAchivements supported games, exo sets and lots of important coverage from good Internet Archive sources. All of this with direct downloads, no ads, super fast. Everything neatly organized and always available.
Either people start donating fast, or its gone. I recommend to download as fast as possible what you need. Its closing in about a month from now on March 31st, 2026.
A sad day for emulation and game preservation.
Edit: Oh wow, their download speeds are terrible currently. I assume everybody and their mum is in the process of archiving.
Yes, they have alot of people to help archive for the new site. They just posted that the best way to help is to use their script to take some of the workload off the site and increase speeds. Minerva, that is.