It's easy to get confused as there are several outdated downloads and project pages floating around the web. It appears, however, that this github repository is where Mogenerator is being actively developed.
A few days ago I stumbled upon Swiz, which bills itself as the "brutally simple micro-architecture for Rich Internet Application development with Adobe Flex." If the term micro-architecture or the buzzword Rich Internet Application haven't scared you off yet, read on, because it really is a lovely little framework.
Cue the emergence of a viable alternative to Google App Engine.
The Yahoo! Flex Skin is a lovely minimalist skin by the good folks on Yahoo!'s Flash team. However, it has an issue that you need to work around if you want to load it in dynamically at runtime. It's a simple thing, but I thought I'd document it here in hopes that it will help save someone else a few minutes of confusion.