What are /r/NextGame's favorite Products & Services?

From 3.5 billion Reddit comments

EVERYTHING!

I need to mention the frontend, GameBase. Lots of work by fans of older systems has gone into providing not only the games but screenshots, manuals, music and all sorts of cool stuff. Kinda like a full MAME set but for so many different systems.

Check here for more info GameBase and also the forum GB64 for links, although some may be down due to the age of said links.