Performancing, a very good post editor

Performacing is a very good post editor, written as a plugin to Firefox. It’s a WYSIWYG/HTML editor, that is launched in line in your current window ( useful if you want to comment on a page or blog entry. You can use it to post to more than one blog, without going to your blog’s admin page, and categories are selectable. It works excellent for WordPress and other blogging software supporting xml-rpc posting.
Read my post on Perfomance.