What is the Best site to check the Back links?

[gapinfotech]

now this time http://ahrefs.com/ is the best site for check back link

[quadradesign2]

I prefer backlinkwatch.com site to view the backlinks.

[Bitmantra_raj]

I personally use open site explorer and love that tool because it provides a deep view of not only back links but other factors about your site too and it's very easy.so i'll suggest go for open site explorer.

[john345]

Backlinkwatch.com and ahrefs.com are the best tools to check back links to websites.

[Iorynx]

Google webmaster tools is generally good as it is free. Sometimes it doesnt show any backlinks or show very little . Then you may have to use some other tools like ibacklinkspro.