You could have downloaded Hozz 0.1.3 for Mac from our software library for free. The actual developer of this free Mac application is Ruipeng Zhang. The software is included in Internet & Network Tools.
From the developer:
Hozz is a hosts manager, with which you can easily switch between your network environments. The program allows you to: swift switch between different hosts files, import hosts file by dragging them into the sidebar, export hosts files, export hosts file to Surge config file, and more.
You may want to check out more Mac applications, such as AquaEthereal or tn3270, which might be related to Hozz.