This is mostly inspired by other lists and journals around DA. It's not comprehensive-I am being a little picky about what I include. I try not to include providers who put theme restrictions on their unrestricted stocks, but some of these say "no hate or violence." I have run across a few who say "nothing immoral." But that's very subjective (I think an image of two women kissing is normal, but it's no doubt someone else's porn or immorality) and, well, restrictive.
I'll try to keep this up-to-date. I am on the lookout for more accounts to put in the "Completely Unrestricted" column. That means not one single restriction--even credit and notification, let alone commercial or thematic restrictions. So if you know of any I don't have listed, let me know.
Credit & notification optional. Commercial use w/o permission allowed. All themes and usages allowed.
wintersmagicstock -she's at the top of this list for a reason.