SteamTrades

Thank you!

ST only provides text lists of what people have and want. Matching what you want & have with what other people want & have is basically limited to one game at a time. You may get tired of getting messages like "Anything here for your game X?" when they have absolutely nothing on your wish list. ST might be more useful for people who don't strictly trade games, like people who trade games for gems or TF2 keys, and if you don't then expect to get the occasional key offer for games.

Barter (and presumably LesTrades which was made when Barter dev went away for a while), although its not pretty looking, has:

• Auto wishlist & library syncs

• Trader matching system that can match you with traders on multiple games

• Notifications of offers & accepted offers via feed, email, or Discord

• Ability to track your list of tradeable games and tag them in many ways

• Manual game blacklist/ignore sync with Steam

• Each game's supply & demand on the site

• Details of each game's price, reviews, region locks, number of trading cards, if there are achievements, mass giveaways, etc

• Which bundle-type deals every game has been in - Thanks to their editor Lilly, aka sensualshakti, who also makes SG's Deals posts and croud sources relevant info

• User or editor sourced warnings such as region restrictions, beta keys, store delisting or bannings, key revocations, etc

• More meaningful stats on traders than just + or - on ST