Ahh, good ol' Sideshow and Windows "Gadgets"
"According to Microsoft, Gadgets were discontinued because they have "serious vulnerabilities", "could be exploited to harm your computer, access your computer's files, show you objectionable content, or change their behavior at any time"; and "an attacker could even use a gadget to take complete control of your PC". Gadgets were completely removed in Windows 8. However, with the launch of Windows 10, widespread support for Gadgets led to their revival as third-party enhancements to the new operating system, which adjusted to take account of them, including a link to the Gadgets Sidebar in the Windows Control Panel. Many hundreds are now available from a variety of sources and more are in active development."
What was old is now new again!
(But some of us still remember)