There are plenty of applications that let you write blog posts without using the default web interface for Blogger, Wordpress, LiveJournal, or other blog platforms. But most have one limitation - you have to download and install the application on each and every computer you plan to work on. While Zoundry Raven might not have as many features as Windows Live Writer or be as easy to use as ScribeFire, the free Windows tool has one major advantage: You can install it to a portable flash drive and use it on any Windows computer.