SEO SpyGlass Enterprise is a feature-rich backlink analysis software for professional SEOs and webmasters. The tools provide the deepest possible insight into your competitors' link building strategies. It lets you milk your competitors of their most SEO-productive backlink sources and use these sources in your own SEO campaign. You'll check all backlinks for Google PageRank and Alexa Rank, scrutinize the used anchor texts and URLs, discover how many backlinks come from forums and blogs, from homepages, from DMOZ-listed sites and much more. The software generates 5 types of reports that can be further printed out, sent to your clients by e-mail or made available on a Web site. You can brand your reports with a company logo and set their color schemes and data layout. This software is also available within SEO PowerSuite, which includes WebSite Auditor, LinkAssistant, and Rank Tracker as well.
phoneutria is a Web crawler that is multi-threaded, scalable, high performance, extensible, and polite. It can be used to crawl, index, load-test, or even download any Web or enterprise domain and is configurable through a XML configuration file. Phoneutria can be used for either checking the links of a Web site or for load-testing purposes (i.e. the level of politeness can be configured). It provides a plug-in mechanism for further extensions.