With the unavailability of Windows Live Writer for newer versions of Windows, a good replacement for it is Open Live Writer. It is a open source application which enables you to create, edit and publish blog posts. Since the code is based on the Windows Live Writer, it looks and behaves the same so whoever used Windows Live Writer will find it easy to use.
It can be downloaded using the Open Live Writer web site.
You will be able to find plugins to use with the writer. If you are needing to post source code you can try the Code Plugin by Rich Hewlett.
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