http://www.chessgames.com/perl/explorer
All openings, variations, gambits etc
Sort:
http://www.chess.com/explorer/
Since you are not a payed member then you can only go through 4 moves so the website in the post above mine would be better.
Turns out in the website posted in post 2, you have to be a payed member to go further than 3 moves so, Game Explorer on chess.com would be better :)
It's better to download Scid ( http://scid.sf.net ) and a big database ( http://sourceforge.net/projects/icofybase/ ) anyway. Why use silly web based things when you can have a fully functional database?
Does anyone know, where to find all:
etc...
For example: There's no "A28: English: four knights, Nimzowitsch variation"
(1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. e4)
Thanks!