From Aeon HACS Wiki

Aeon HACS is the name of a high-level application framework created by Aeon Laboratories. HACS stands for "Hardware Automation Control System." The framework provides a structure and building blocks that enable programmers to quickly develop an application for controlling a machine via a graphical user interface.

Aeon HACS is open source.

Aeon HACS makes it easy to automate a process control system. The first HACS applications were for scientific instruments used to extract and purify carbon from samples for radiocarbon dating.