I have a bunch of different ones. I have 4 Logitech Alert cameras (font door, backyard, deck and side door), a no name Chinese camera (shed), a arecont (Utopia left) and a Acti (utopia left). I look for deals! 🙂
The software is Blue Iris and is very powerful. I am going to run a couple more (not sure what brand) into the woods to capture nature.