Up to August 2003 there were two contenders for the Web services transaction space: OASIS Business Transactions Protocol (BTP), and the Web Services Transactions (WS-Tx) specification. There have been several subjective articles and comments comparing BTP to WS-Tx, attempting to show that BTP can do everything WS-Tx can and ignoring the important differences that exist. This article will try to give an objective comparison of these two specifications and show how they both attempt to address the problems of running transactions with Web services. At the end of the article it should be apparent how and why WS-Tx and BTP are different, while at the same time illustrating where they do have some commonality.