Chrome quick search
With few steps you will be able to make your own custom search in Chrome for things you like.
First thing to do is open a tab in Chrome and type:
Example search engines:
port - http://www.speedguide.net/port.php?port=%s
stack - https://stackoverflow.com/search?q=%s
scode - https://searchcode.com/?q=%s
ip - http://en.utrace.de/?query=%s
mac - http://www.coffer.com/mac_find/?string=%s
Edit: for some reason, search-words starting on “C” does not work.