Official Release: FocusWriter Portable has become an official release. Below is an outdated/unsupported version.
Description: FocusWriter is a lightweight, portable, and feature rich word processor with an emphasis on distraction-free writing. You can skin it, set writing goals, and enjoy features not usually found in similar writing applications like spell checking and tabbed documents.
Most "distraction-free" writing tools are focused on cutting everything out until you're left with little more than a glorified copy of Notepad. FocusWriter offers features usually absent from focus-centered writing tools like spellcheck, tabbed documents, themes, real-time stats on your work (character, word, paragraph, and page count), as well as daily goals based on word count or time spent writing. The interface is there when you want it and vanishes into the background when you just want to write.
-Direct quote from LifeHacker
PortableApps.com Launcher: This portable app was made using the PortableApps.com Launcher.
Download FocusWriter Portable Development Test 2
8 MB Download, 30 MB Installed
December 6, 2010: Cleaned up customColors key left behind.
November 22, 2010: Initial Release