Tossing a few pennies back at the thread...
I'm in favor of keeping "CMS", "Open" or "OS" out of the name after sleeping on it for a few days now. (Where or not those or something similar show up in the URL for the name is another issue entirely. Getting a decent URL these days is nearly impossible, it seems)
And to thoroughly beat a dead horse, the name should be catch, simple to spell and remember, and not "cute". If it consists of more than one word, shouldn't be easy to get confused and reverse the word order.
Naming is very tough business which shouldn't be taken lightly or done hurriedly, despite my proclivity for wanting to check another item off the list.