Plasma Bigscreen was a software project from KDE which contained an interface optimized for Smart TVs and other computers such as the Raspberry Pi which can be connected to large displays.
[1][2][3] The desktop environment was based on KDE Plasma 5.
Voice control was provided through integration with Mycroft AI.
Plasma Bigscreen supported HDMI-CEC.
[4] Plasma Bigscreen was available as a KDE Neon-based image, or was installable on postmarketOS.