Scrivener - Scrivener is a content-generation tool for composing and structuring documents.
Dimer Beta - Simplest way to write and publish beautiful docs
Manuskript - Open-source tool for writers.
Content Editor 2.0 by Surfer - Content Editor is the most advanced content optimization tool that allows you to write and grade your work.
bibisco - bibisco is a novel writing software.
Publish to WordPress - Publish content on WordPress right from Google Docs