A new market is booming along with Cloud. The emergence again proves this is the future of IT, no doubt.
Big Players:
http://www.castiron.com/ (几天前刚被IBM收购)
http://www.boomi.com/ (本身已经基于云，客户也可选择离线方案)
http://www.informatica.com/Pages/index.aspx (老牌数据集成解决方案提供商)
