Today Ricardo tested BlogScript, an AppleScript client that makes use of MacOS 10.1's XMLRPC capabilities; and I tested mozBlog, a toolbar for Mozilla/Netscape6, that is very intuitive to use while browsing.

Both worked fine with b2
(although for mozBlog I'm still adding quirks to xmlrpc.php to make it work around some bugs in Mozilla's xmlrpc handling, so to use mozBlog you need to have a recent xmlrpc.php file).