Sorcerers Apprentice
Hero
But now we're talking about the niche of games that are "D&D" but aren't published by WotC. There's probably only room for one contender in that niche. If it isn't big it isn't "D&D"!They really aren't though. Games generally compete in niches, because gamers that aren't playing D&D are looking for a specific experience and style of game. So Delta Green competes to some degree with Night's Black Agents, but not TORG or ICONS.