This Spring/Summer's list of new features to the site are as follows:
Domain Whois
IP Whois
DNS Information (provided via "dig")
Reverse Whois IP to Domain and back.
IP Triangulation (ip to city, state, and country with latitude and longitude)
Ping
Traceroute

Now, these are the features that are basically done right now; I have all of the coding for them done for the most part on my home dev machine.

If you'd like to see anything more, please feel free to make a request!