One variation is played the same as Texas Hold'Em, with the one exception that there are no blind bets. Each player antes into the pot as per regular poker. There is no small blind or big blind, all betting rounds are started by the player to the left of the dealer and as per regular poker betting rounds.
Another variation is played the same as Texas Hold 'Em, with the exception that there is no flop. Instead, the first three community cards are flipped one at a time instead of all at once. This adds two betting rounds (and pretty much removes all semblance of this being a Hold 'Em game over a Community game).