I have been using Windows Live Writer since the first beta in 2006 and I it has been my preferred blogging tool ever since. So it was great to hear that there finally is a successor – welcome Open Live Writer.
Open Live Writer is an open source application enabling users to author, edit, and publish blog posts. It is based on a fork of the well-loved but not actively developed Windows Live Writer code. Open Live Writer is provided under a MIT license.
Also check out @Shanselman post – Announcing Open Live Writer – An Open Source Fork of Windows Live Writer - for some more background information.