Google Link Analysis Tool @ Webmaster Central
Google made available a tool recently within its Webmaster Central tool suite that displays and allows you to download the links
within your site and to your site.
SearchEngineLand is reporting that Google will not show all of the links they know about (particularly those in the supplemental index) but that it is a significant difference in the old
link:yourwebsite.com command used by so many for so long. For detailed
information, check out the post about the change in the
Google Webmaster Central Blog.