PageRank Prowler allows you to set a PageRank level which it will look through Google search results to find sites at or above that PageRank. These results can be saved as an HTML sheet or in a CSV list. The benefits PageRank Prowler has over other PageRank software are

It allows you to search for multiple terms at once. For example, you can search for sites linking to any of your main competitors all at the same time.

PageRank Prowler also allows you to search for specific search terms and not just backlinks. (OptiLink just searches the backlinks of a given site).

PageRank Prowler will also allow you to search starting from URLs within a given site / sites and return results from there.

At $67 PageRank Prowler is significantly cheaper than OptiLink.

Update May 18th: unfortunately the whole application crashed due to the copy protection virtual vault (that calls home I think..)... The author Shawn Pringle assisted me with installation, but unfortunately we couldn't manage to make it work more than 1 or 2 times per PC... he refunded me the money - but now I am without tool! :-(