While high Google PageRank isn't the end-all/be-all of SEO, it is a very good general indicator. Because of that I have created a number of PageRank tools (<!-- m --><a class="postlink" href="http://www.thinkbling.com/tools.php">http://www.thinkbling.com/tools.php</a><!-- m -->). They are completely free to use.
PageRank Checker (<!-- m --><a class="postlink" href="http://www.thinkbling.com/prcheck">http://www.thinkbling.com/prcheck</a><!-- m -->) can check 1 or more sites at a time and not only show you their PageRank but also their Alexa Rank. This is very useful if you routinely want to check your or your competitor's sites.
PageRank Calculator (<!-- m --><a class="postlink" href="http://www.thinkbling.com/prcalc">http://www.thinkbling.com/prcalc</a><!-- m -->) can estimate what it will take to reach a certain PageRank. In its advanced view you can change the average number of "outbound links" (OBLs) so that you get a better estimation.
PageRank Search Results (<!-- m --><a class="postlink" href="http://www.thinkbling.com/search">http://www.thinkbling.com/search</a><!-- m -->) are simply searching with Google and displaying the results along with the PageRank of each site.
I am constanly open to improvements and new ideas for tools.
PageRank Checker (<!-- m --><a class="postlink" href="http://www.thinkbling.com/prcheck">http://www.thinkbling.com/prcheck</a><!-- m -->) can check 1 or more sites at a time and not only show you their PageRank but also their Alexa Rank. This is very useful if you routinely want to check your or your competitor's sites.
PageRank Calculator (<!-- m --><a class="postlink" href="http://www.thinkbling.com/prcalc">http://www.thinkbling.com/prcalc</a><!-- m -->) can estimate what it will take to reach a certain PageRank. In its advanced view you can change the average number of "outbound links" (OBLs) so that you get a better estimation.
PageRank Search Results (<!-- m --><a class="postlink" href="http://www.thinkbling.com/search">http://www.thinkbling.com/search</a><!-- m -->) are simply searching with Google and displaying the results along with the PageRank of each site.
I am constanly open to improvements and new ideas for tools.