Glad you asked! Because as far as SEO reporting tools go, there isn't currently anything better than Majestic SEO. For a price tag of zero dollars, and an upload of a specific .txt file to your website to prove the site is yours, you can get detailed reports including who is linking to your website, and the page in which the links exist.
Official About US:
"Majestic SEO surveys and maps the Internet and has created the largest commercial Link Intelligence database in the world. This Internet map is used by SEOs, New Media Specialists, Affiliate Managers and online Marketing experts for a variety of uses surrounding online prominence including Link Building, Reputation Management, Website Traffic development, Competitor analysis and News Monitoring. As link data is also a component of search engine ranking, understanding the link profile of your own, as well as competitor websites can empower rational study of Search Engine positioning. Majestic SEO is constantly revisiting web pages and sees around a billion URLs a day.
Based in England, Majestic SEO has an international client base, attracted by its transparency of operation, reputation for quality, and value of offering.
Majestic SEO is available at variety of price points, including a free registration and subscription options from UK £29.99 (€39.99 US$49.99) per month rising to enterprise level options. Higher end features include deeper analysis and API access, allowing developers to integrate Majestic Data with their own toolsets.
Majestic, Majestic-12, Majestic SEO, Flow Metrics, Citation Flow and Trust Flow are trade marks of Majestic-12 Ltd."
Some other SEO tools include:
Search Engine Optimization Toolkit (by Microsoft)
The IIS Search Engine Optimization (SEO) Toolkit helps Web developers, hosting providers, and Web server administrators to improve their Web site’s relevance in search results by recommending how to make the site content more search engine-friendly. The IIS SEO Toolkit includes the Site Analysis module, the Robots Exclusion module, and the Sitemaps and Site Indexes module, which let you perform detailed analysis and offer recommendations and editing tools for managing your Robots and Sitemaps files.
The Screaming Frog SEO Spider is a small desktop program you can install locally on your PC, Mac or Linux machine which spiders websites’ links, images, CSS, script and apps from an SEO perspective. It fetches key onsite elements for SEO, presents them in tabs by type and allows you to filter for common SEO issues, or slice and dice the data how you see fit by exporting into Excel. You can view, analyse and filter the crawl data as it’s gathered and updated continuously in the program’s user interface.
The Screaming Frog SEO Spider allows you to quickly analyse, audit and review a site from an onsite SEO perspective. It’s particulary good for analysing medium to large sites where manually checking every page would be extremely labour intensive (or impossible!) and where you can easily miss a redirect, meta refresh or duplicate page issue.
Free SEO Tools
Many of these tools have advanced versions that are accessible with a coupon code only. If this feature is available, you will be prompted for the code before you run the tool.