sshfp generates DNS SSHFP records from SSH public keys. sshfp can take public keys from a known_hosts file or from scanning the host's sshd daemon.
The openark kit is a set of utilities for MySQL. They solve everyday maintenance tasks, which may be complicated or time consuming to work by hand.
Google Translate with speech synthesis in your terminal as ruby gem
Online tool to test webserver allowed http methods
Command line script to administer the Amazon Route 53 dns service
Linux distros for vulnerablity exploration training