Yahoo Site Explorer shut down in November 2011, leaving a void for those who used it to check competitor backlinks and their own site's backlinks. This document provides 9 alternatives to Yahoo Site Explorer, including Bing Webmaster Tools, BacklinkWatch, Open Site Explorer, Majestic SEO, SEO SpyGlass software, Ahrefs, Blekko, SEOattack, and Exalead. The alternatives vary in features and some only provide limited free functionality before requiring a paid subscription.