Gamerate is described as 'is social based database of computer, electronic and board games. Players can track, organize and share their gaming history, library of bought and finished games, and also share their ratings and reviews' and is an app in the Business & Commerce category. There are more than 10 alternatives to Gamerate for Online / Web-based, Mac, Windows, Linux and iPhone. The best alternative is Metacritic, which is free. Other great apps like Gamerate are IGDB.com (Free), OpenCritic (Free), GameFAQs (Free) and MobyGames (Free).
GameRanger is a free download for Mac and PC that lets you play over 600 games and demos online with friends and opponents worldwide. GameRanger offers features like profiles, friends lists, instant messaging, in-game voice communication, and competitive ladders/rankings/ratings.
Board Game Geek (BGG) is a board game database - a collection or catalog of data and information on traditional board games. The game information recorded here is intended for posterity, historical research, and user-contributed ratings.
GameRankr is an app for tracking the video games you play and want to play. It integrates with facebook so you can see what games your friends are playing. GameRankr is like Goodreads but for video games.