This is a Plasma 5 applet that shows window buttons in your panels. This plasmoid is coming from Latte land but it can also support Plasma panels.

Thirty years ago, Netscape and Sun Microsystems introduced JavaScript as a new, cross-platform scripting language for building internet applications. Brendan Eich, the language's original designer, ...

I clicked the wifi applet trying to connect to wireless network, I couldn't navigate either using keyboard or mouse, the focus was stuck on upper part of interface not allowing me to go down to ...