DockbarX - DockbarX is a standalone dock that groups and launches applications.
Wayfire - Wayland compositor with 3d effects.
Gnome-Pie - Gnome-Pie is a circular application launcher for Linux.
GNOME - An easy and elegant way to use your computer, GNOME is designed to put you in control and get things done.
Synapse - Synapse is a semantic launcher written in Vala that you can use to start applications as well as find and access relevant documents and files by making use of the Zeitgeist engine.
Xfce - Xfce is a lightweight desktop environment for UNIX-like operating systems. It aims to be fast and low on system resources, while still being visually appealing and user friendly.