Abandonware Sites That Are Legit

Someone asked me today "Is [site name] a safe place to get this particular game?"

Well, it was, but it's confusing to people because there's a minefield of trash sites out there.  So I'll give everybody the quick rundown on which sites I trust.

This isn't every reputable site, but the ones I know which also have the most complete listings.  Most of them link to other sites as well, so start with these and see where they take you.