By A Mystery Man Writer
Here are 3 free software to minimize applications to system tray. Icons of minimized applications or folders will not appear in taskbar, but in system tray.
Solved: Too Many Background Processes on Windows 10 & 11
Articulate 360: Automatic Updates - Articulate Support
3 Free Software to Minimize Applications to System Tray
Program Windows in Windows 10
Advanced SystemCare User Manual
Application stays minimized in the Taskbar in Windows 11/10
Reduce Memory v1.6
Public Preview : Improve Win32 app security via app isolation - Windows Developer Blog
Minimize and Hide Your Open Apps and Programs in the System Tray