It is import that a search engine is able to follow any redirects that you may have set up. This tool helps you determine whether the redirect you have created is search engine friendly.
This tool helps you ensure that your link partners are linking back to your website. It also determines the anchor text used by your link partners to link to your website.
This tool will help you determine relevant and popular keywords related to your website.
This tool helps you build a LOT of quality backlinks. It searches for websites of the theme you specify that contain keyphrases like "Add link", "Add site", "Add URL", "Add URL", "Submit URL" etc, most of the results could be potential backlinks. Text links are important for ranking well in search engines.