Windows

TaskbarHider

A native Win32 GUI app that hides running windows from the taskbar (sending them to the background). Hidden windows are persisted to a data file, so they survive app restarts — handy for decluttering the taskbar while keeping programs running.

Build script (build.bat) Download source (TaskbarHider.cpp)

Build from source: download TaskbarHider.cpp and build.bat, then run build.bat in the folder (requires MinGW-w64 / g++). Free and open — no installation needed.