DT PS Tree shows running processes as a tree. It is a reimplementation of
pstree from PSmisc for FreeBSD, NetBSD, OpenBSD, DragonFly BSD, and possibly
other modern BSD variants. It also works without /proc and will show the full
set of processes in a jail even if init is not present.

Homepage:
http://code.douglasthrift.net/trac/dtpstree
