I decided to make a small tool that has a few tutorials on how to install stuff on a DSi. It's called DualSave i.
Yes, that was a joke with the console name. DualSave i = DSi.
Well, right now, it only has a few things that you can already get if you know where to find. It's really simple.
It has a Mac interface made out of sprites from a virtual machine.
It's nothing major, but I think I'll update it.