Color Palette Generator - Enter the URL of an image and find its color palette
DockbarX - DockbarX is a standalone dock that groups and launches applications.
Color Hunt - Curated collection of beautiful colors, updated daily
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.
Coolors.co - The super fast color schemes generator! Create, save and share perfect palettes in seconds!
Gnome Do - Simple, sleek, swift, smart. Do. GNOME Do allows you to quickly search for many items present on your desktop or the web, and perform useful actions on those items. GNOME Do is inspired by Quicksilver & GNOME Launch Box.