Google Docs CMS by JoshCanHelp
This is my attempt to write the most simple user-friendly, collaborative, bare-bones CMS possible.
This CMS uses a Google Docs spreadsheet to create and manage content. Updates are instant, management is easy, and backup is just a matter of downloading the spreadsheet. Also, because Google Docs is so easy to share with others, managing site content collaboratively is as easy as sharing the source file.
It is my sincere intention to keep updating this file as I find new ways to use Google Docs exporting features and get better at PHP. You can follow updates and changes on the change log (link on the left). I'm not using version numbers, just the date I created the update.