KDE Plasma is the desktop environment of the KDE community: the graphical interface for Linux and other Unix-like systems, with a panel, launcher, system tray, window management, notifications and system settings. It is distributed as free software that users install on their own devices. The project page describes Plasma as a classic desktop with a modern look that adapts to the needs of the user.
KDE e.V. is a non-profit association registered under German law, with its seat in Berlin. It represents the KDE community in legal and financial matters and holds the registered KDE and K Desktop Environment trademarks, so Plasma has no commercial owner and no foreign parent company. The source code is licensed under the GPL and LGPL, which lets European organisations review, adapt and self-host it without depending on a single vendor. The association's privacy policy does not name a specific hosting location, so for a European organisation the choice of distribution and update sources matters most for sovereignty.