As Ryan and I have been working on our Maya Python book, I have been converting more of my own tools into Python modules and scripted plug-ins. Consequently, I have decided to stop supporting my old MEL tools and have begun rolling everything into a single Python package: AM Tools.
Additionally, I have put up a couple of custom plug-in commands to accompany nodes that I previously released on the site. Because these make pretty good use of a variety of Maya API classes, they should serve as a pretty good reference for anyone out there wanting to roll their own commands!