In addition to being a safe, informative site hosting an extremely powerful open-source desktop environment, kde.org has NO third-party scripts or cookies and does not set cookies at all except for logins.
The centre of interaction for the KDE project, which develops a rapidly-improving desktop environment for Linux and other *NIX variants. It is a very well-known and trusted project whose work is available from most distributions.
KDE is a popular desktop environment and is included as the default environment in many popular GNU/Linux distributions such as OpenSUSE, Mandriva and PCLinuxOS.
The downloads on the site are completely free (and open source) and very trustworthy.