Website’s popularity test / webpage Rang checker:

Prchecher
http://www.prchecker.info/check_page_rank.php

Yahoo! Site Explorer
https://siteexplorer.search.yahoo.com/

Compete
http://compete.com/

Quantcast
http://www.quantcast.com/

Alexa
http://www.alexa.com/

Feed Compare
http://www.feedcompare.com/

popuri.us

http://popuri.us/


TweetVolume

http://www.tweetvolume.com/

Quarkbase
http://www.quarkbase.com/