Custom search
w: https://www.wikipedia.org/w/index.php?title=Special:Search&search=%s Wikipedia
man: https://www.die.net/search/?q=%s
whois: https://www.whois.com/whois/%s
isup: http://www.isup.me/%s Is it down for Everyone or Just Me?
ql: http://quickdocs.org/search?q=%s Quickdocs
cl: https://duckduckgo.com/?q=common+lisp+%s Common Lisp