Virtkick is a VPS control panel for hosting providers.

Sentora is an open-source web hosting control panel built specifically to work on a variety of Linux distributions.

ServerPilot.io provides a way to run WordPress and PHP sites. Simple, fast, secure hosting on your DigitalOcean servers.

ISPmanager is a web hosting & Linux server control panel for both dedicated server and VPS management.

ISPConfig is an open source hosting control panel for Linux.

Kloxo (Lxadmin) was a free and open-source web hosting control panel for the Red Hat and CentOS Linux distributions.

GNOME Panel is a highly configurable launcher and taskbar for GNOME. It formed a core part of the GNOME desktop in versions 1.x and 2.x. It has been replaced …

tint2 is a system panel/taskbar for Linux. It is described by its developers as "simple, unobtrusive and light".