1. IBM Rational Requisite Pro

资料链接如下：http://www-900.ibm.com/cn/software/rational/products/requisitepro/index.shtml

2. Borland CaliberRM

资料链接如下：http://www.borland.com/cn/products/caliber/index.html

3. Telelogic DOORS

资料链接如下：http://www.telelogic.com/cn/products/doors.cfm