SEO Spyglass analyzes your keywords and competition sites for relevant backlinks. The software searches using over 400 search engines from all over the globe for links and anchor text pointing to competition sites; it will then analyze those links for pagerank, link quality and many other factors to uncover the entire linking strategy to aid you in the process of dominating the search engines for your targeted keywords. You can see a full list of the search engines that this software uses by visiting its home page and picking "Supported search engines" in the "Learn more" section on the right.
If you choose to opt for the more expensive enterprise edition, which is priced at $249.75, you will also be able to get a very professional report for your own review or for your clients if you provide an analysis service. The software comes with six months of free search engine algorythm updates and after that you can purchase updates for as little as $3.05 per month.
Software comes with full support and a guaranteed answer time of 24 hours for any support ticket that you submit. It also offers a full 30-day money back guarantee if you are not happy with the software.