Last week sometime I followed a link on these forums to a free version of LOTRCCG at Gempukku. After playing several matches and building several decks I have discovered that I do not like that game, though I would really really like to. I love everything Tolkein, but the game blows.
I went on a search for other free online CCGs, and found LackyCCG. What an awesome, robust tool. I have downloaded plug-ins for Magic, Decipher's Star Wars TCG, Legend of the Five Rings, the old Middle Earth CCG, and Harry Potter TCG. These are full, complete versions. I have only played a couple games of Magic and a nice long session of the Potter game so far, because that is what my playing partner wanted to try first. Potter is an easy game to learn, which is important because Lackey doesn't enforce any rules. It is a sandbox, and though I found this to be daunting at first I really like it.
Anyway, I suggest anyone to give it a shot.