I have monit running and working (I set up a dummy warning that is getting sent), but I don't see any binary called "monit" in the process list. Furthermore if I sort the processes by newest process, the only things I see are the processes relevant to monit sending out emails — I don't see the monit binary itself.
more info
I installed it with apt-get monit
I started it with service monit start
# ps -ef | grep monit root 29985 23882 0 02:07 pts/0 00:00:00 grep --color=auto monit`