DockbarX - DockbarX is a standalone dock that groups and launches applications.
Nimi Places - Nimi Places is a Windows desktop organizer that gives you the ability to put files and folders into customizable containers. The elements in the containers are represented as icons or thumbnails. Read more about Nimi Places.
Gnome-Pie - Gnome-Pie is a circular application launcher for Linux.
iCollections - Organize your Mac desktop items.
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.
Zeplin - Collaboration app for UI designers & frontend developers