Access Point Utilities for Unix is a set of utilities that configure and monitor a Wireless Access Point under Unix. It is known to compile (with GCC and the IBM C compiler) and run under Linux, FreeBSD, OpenBSD, MacOS X, AIX, and QNX.
You can download it from the following link: https://packetstormsecurity.com/files/download/32441/ap-utils-1.3.3.tar.bz2
Source: https://packetstormsecurity.com/files/32441/ap-utils-1.3.3.tar.bz2.html