Infection Monkey : The Infection Monkey is an open source security tool for testing a data center's resiliency to perimeter breaches and internal server infection. The M...
Run your own identity server : Running your own identity server allows you to act as an OpenID Provider. You could run one just for yourself, for a community of users or, if you wis...
DNS Report : The free, thorough report on the DNS for your domain
Inj3ct0r 1337day.com : Exploit database separated by exploit type (local, remote, DoS, Poc, etc.)