WordPress is an open source content management solution based on PHP maintained by Automattic which is also being offered as hosted solution.

Windows Live Writer is part of the Windows Essentials suite focused on providing a better writing experience.

Leanote is a self-hosted note taking app.

Chyrp is a ultra-lightweight ultra-flexible blogging engine with a fetish for birds and misspellings.

Anchor CMS is a lightweight blogging platform with a focus on simplicity and elegance.

Ghost is an open source publishing platform which is beautifully designed, easy to use, and free for everyone.

Jekyll takes your content, renders Markdown and Liquid templates, and spits out a complete, static website ready to be served by Apache, Nginx or another web …

Octopress is an obsessively designed toolkit for writing and deploying Jekyll blogs.

Write.as is a focused publishing platform.

Umbraco is an open source content management system (CMS) platform.