I don't know Jer's Novel Writer.

I know there is a similar piece of software for Mac and Windows that I've seen quite a few people using, but I don't find it all that attractive to me (I'm all about open source). And there is another piece of software that has a native Linux version I looked at, but I didn't care for it.

Novel Writer looks like a good piece of software that really mixes all of the elements that I want into a single package.