Definitive List of Extensions for BlogEngine.Net

Since I first started using BlogEngine.Net a few weeks ago, I've come across many excellent extensions/controls/widgets developed by the user community. I've even written a few myself! I decided that I would compile a categorised list of all the things I had found and share it with everyone. There are almost 45 in this list. If you know of any others, please send them to me and I will add to the list.