Majestic - Link intelligence tools for SEO and Internet PR and Marketing. Site Explorer shows inbound link and site summary data.
17 little-known sources of backlinks for your link building campaigns. Trust me: (That's true even if they didn't add a backlink to your site).
With this tool, you can get the top backlinks of a domain. You can check backlinks for any domain for free with this SEO tool. Preview Video: Backlink Checker. How To Add Backlinks To Your Website