HotkeyNet is described as 'is free multiboxing software. It's a hotkey program for gamers who play several characters at the same time. It lets you control several programs on your network from any keyboard no matter which PCs the programs are running on'. There are more than 10 alternatives to HotkeyNet for Windows, AutoHotkey, Mac and Android. The best alternative is Input Director. It's not free, so if you're looking for a free alternative, you could try Hammerspoon or Mini Mouse Macro. Other great apps like HotkeyNet are Quick Macros (Paid), Stepwise (Free), keystarter (Freemium) and Xposed Additions (Freemium).
Input Director is a Windows application that lets you control multiple Windows systems using the keyboard/mouse attached to one computer. It is designed for folks who have two (or more) computers set up at home and find themselves regularly sliding from one system to the other.
Description Xposed Additions is an XposedBridge Module that adds new features to your device. One of these features is the largest Key Re-map system for Android. Since this module uses XposedBridge, it is able to Re-map any key on your device and in any way you'd like.