For AIX this will be procmap which, according to documentation "prints the address space map of processes".
You can also have a look at psutil which is a Python
module providing an interface for retrieving information on all running processes and system utilization (CPU, memory, disks, network, users) in a portable way by using Python, implementing many functionalities offered by command line tools such as: ps, top, ..., pmap. [...] It currently supports Linux, Windows, OSX and FreeBSD.