Always thought Prosecurity and Dynamic Security Agent as HIPS but they seem to do better than some dedicated firewalls.
2007-07-26: The following products have been leak-tested:
* Online Armor Personal Firewall 2.0.1.204
* ProSecurity 1.40 beta 1
* Rising Personal Firewall 2007 19.33.10
* TheGreenBow Personal Firewall 2.60.005
A fellow poster over at Wilders did some thorough testing of a few apps as well.