I recently stumbled across this superb little word processor, and I’m just blown away by how good it for being made by one dude for free. It’s like a slimmed down version of Scrivener or Papyrus, with a wonderfully simple and easy to use interface.
It’s open-source, and works on all platforms (Windows, Mac, Linux, including phones and tablets). This lady here does an excellent overview of its features.
If you’re looking for a nice little app for writing, outlining, or planning something, I’d recommend giving it a look.
Firefox requires this addon to install PWA’s onto the system, unfortunately. But the application can be used from any browser if you don’t mind using it there.
The source code is available here, and though he mentions only open-sourcing the old version, Version 4 (the latest) appears to be available there under the MIT license.
The Google docs integration is, AFAIK, only there if you want to access your document from anywhere and any device. Otherwise it works perfectly well standalone, allowing you to save your document in either wavemaker format or as a .doc.