We have this:
http://www.gog.com/games##search=fighting
A very small selection, more so with the departure of the Guilty Gear games. Only other 'real' fighting game there is Ultimate Body Blows, which seems to be worse than SFA2. And it doesn't help that some devs don't want to/can't put their fighting games on GOG.

Thanks, I'll check the list out. We need more fighting games in these parts. What's the point in life if you can't curb stomp someone?

Which reminds me, there was a PC version of Mortal Kombat Trilogy...team GOG? :D

While we're on the topic, are there any old pc fighters or console ports that we can bring attention to? I can't think of any further back than MK:T...and this is the only other one I can think of that's not on Steam: http://www.youtube.com/watch?v=K466MWpaZt4 :P

With the loss of Guilty Gear I think Street Fighter Alpha 2 is the only real fighter left, and as a fan of that game and the genre in general I don't recommend it. It's just not the best of versions of it.

I can think of plenty I would like to see.

There's One Must Fall 2097, Sango Fighter 1 and 2, and Xenophage, which are all now freeware. I'm not sure how good they are, I've only played Xenophage, and I didn't like it. Looking through Mobygames, there's quite a lot of interesting old fighting games that I remember seeing in magazines back in the day:
Bio FREAKS
Brutal: Paws of Fury
Battle Beast
Battle Arena Toshinden
Battle Arena Toshinden 2
Virtua Fighter 2
Fatal Fury 3
Savage Warriors
Primal Rage
FX Fighter
Time Warriors
And the Melty Blood fighting games look pretty good.
And apparently Samurai Showdown IV got a Windows release, but probably only in south/east Asia

The problem with fighting games on computer is the fact that most keyboards don't have n-key rollover making some fighters nigh-unplayable with their complicated maneuvers, especially when you inevitably want to play with a friend on the same screen. Thankfully we can plug in our preferred control method to mitigate the issue but I've always thought this was the primary reason that fighters made consoles their home. Heh, I still have that disc lying around somewhere. It's not a great fighting game, really, but I still had loads of fun with it.

I had one must fall way back when. Given its time period and the fact that one guy more or less made the thing, it's a good early fighter. Nothing excels but it ends up being fun, and it's held in fairly good esteem. Has some leveling mechanics and even fatality like moves. I will say its a bit unique and feels a bit slow before you get powered up. Needs CPU throttling these days to make it playable.

There used to be a solid DOS version of Super Street Fighter 2 Turbo that I hear is in rights hell we will never see. I lent my copy to the wrong guy 14 years ago...sigh. I guess there was a broken attempt to port X-men children of the atom to DOS PC but somebody borked the combo system. My father just told me he gave away my old Sega Saturn and I internally freaked out a bit because it's the only way to really play that game anymore.

I do still have my retro DOS MK2 disk. Don't know how many people are still rockin that one.

There is also Blade of Darkness here on gog.

http://www.gog.com/game/blade_of_darkness

Yes it IS a fighting game in essence. Especially with Gladiator-mod.

An another point for the Melty Blood. I has the Actress Again Current Code 1.07, and I can say it is my favorit fighting game.

Even though it's not the best entry in the series I heard Blazblue Calamity Trigger is pretty good as well.

I've only ever been good at one fighting game. I'll take on anyone, ANYONE, with in MK4 with reptile!

I remembered being surprised by this release : BlazBlue Calamity Trigger which is awesomely done, but damned difficult.

edit: The Witcher ninja'd me :P

there are only 4 beat em ups on here though
not a lot of choice ;p

that said i still prefer sf alpha 2