Don’t Be Loyal: Alternative Stores & Services similar to Steam

Gamers Nexus: "A competitive market is a healthy market, as we know. Expressing a sense of loyalty toward any single brand or distributor is sure to end in either disappointment or highway robbery (and you won't be the one doing the robbing); I've seen it just as much as anyone else: An indie developer puts out an amazing game, no doubt worthy of many hours of play, only to have a response of 'I'll get it if it's on Steam.' This list has several alternatives to Steam for gamers."