Multi Threaded TCP Port Scanner allows you to scan 65535 TCP ports on an IP address. You can specify how many threads to run and the timeout. Furthermore, it will tell you the MAC address of the target and the services that are running. You can scan IP addresses on your network and find out which open ports you have.
SecQua is a tool that quantifies the security of a given Information System, using a novel security metric. It tries to provide a deterministic, unbiased, objective, and efficient measurement. The approach is vulnerability driven and uses the National Vulnerability Database. A security metric must answer questions such as "How secure am I?", "Am I better compared to my last checkpoint/year?", "Am I spending the right amount of money for security?", "How do I compare to my peers?", and "What risk transfer options do I have?". SecQua can state that a system is now 60.2% secure, when last month it was 46.5%. Moreover, it tries to depict how vulnerability patterns expose the information system over time.