Backlink development, done right, is a very intensive process - and most tools are generally more about keeping track of the various steps you've taken. In other words, tools will not replace your own brain work. Using search engines with intelligent "advanced queries" is the best tool there can be, and most link builders depend on their search skills.
Our Link Development forum is there to help people discuss the process of finding backlink candidates. The answer you got there [webmasterworld.com] earlier this month pretty much holds - we don't want to promote tools here, and it's not really the focus of this particular. The kind of tool you are asking about can also be found via any search engine.