live-writer  Windows Live Writer is of the best blogging tool that I found in recent times. The tool is very convenient to write and it provides all possible options that one needs when writing a blog post. It also integrates with most popular blogging platforms like Windows Live Spaces, SharePoint, WordPress, Blogger, LiveJournal, TypePad, Moveable Type, Community Server, and more. You can also retrieve any published post and re-edit back.

As it integrates with WordPress along with supporting the categories, tagging etc; it is very convenient to post any blog entry. This is the tool that helped me to blog live when am in MySQL user conference 2008