Web >> sites >>  Tools (web based)

Dictionary - Yourdictionary.com
Whois @ARIN - arin.net
Whois @APNIC - apnic.net
Whois @InterNIC - http://www.internic.net/whois.html
FTP (web-based) - ftpbin.com
Hardware specs - Monitor specifications at Monitorworld.com
Internet Speed Test - Speedtest.net
SEO - Goole pagerank checker at iwebtool.com
Traceroute - davespeed.com
Web site monitoring - basicstate.com
 

References

  1. http://www.killerstartups.com/