Here are 7 of them:
alexaview.com
domainstats.io
http://www.folowsites.net
rankw.org
thankyou.jp/index.php?a=addurl
topalternate.com
urlm.co
Just enter your domain and wait about a month for them to show up at alexa Site's Linking In.
I don't own any one of them. To make your day, I'm just trying to be cool and give out a little secret.
[You need to pay alexa $9.95 a month to see more than 5 sites linking in per researched url.]