官方网站:http://www.aboutmyip.com/AboutMyXApp/DeltaCopy.jsp System Requirements XP, 2000, 2003, 2008, Vista and Windows 7. We have not tested DeltaCopy on Win9x. 10 MB hard disk 64 MB ram 1 GHz processor or better Deltacopy是开源软件,基于GPL v3,可以免费使用,无需注册. 用官网