MultiMon is quite a stable piece of software as well, so if you have a multi-monitor system of the right vintage, it’s worth checking out. This free tool is only designed to work up to Windows 7, but there are still plenty of computers out there running this older operating system. That includes not showing apps on the primary monitor taskbar that aren’t that monitor. Each monitor’s taskbar only shows the apps on that monitor. It can do this for up to three monitor setups. The free version of the dual monitor software adds taskbars to extended monitors in Windows.