Blogger www.blogger.com (Web | Mobile)
Blogger was one of the first blog-publishing tools. Years after Google bought it, it remains one of the best, especially for newbies. Create a brain-dead simple weblog and let Blogger host it (with a blogspot.com name) using the slew of provided templates, or use it to publish a blog on your own domain.
w.bloggar www.wbloggar.com (Windows)
This post and template editor can handle multiple blogs, across multiple blogging systems.
Windows Live Writer http://get.live.com (Windows)
Live Writer is not a word processor, but a universal, WYSIWYG blogposting tool more powerful than most blog services’ own tools.
WordPress www.wordpress.com (Web)
It lacks the simplicity of Blogger or Vox, but the commercial offshoot of WordPress.org offers some of the best tools of any hosted blogging service.