Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).
GridMove - GridMove - A window management tool that can quickly arrange your windows into desktop grids.
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.
WinDock - WinDock is a window manager ideal for large, or multi-monitor setups. Features:
DockbarX - DockbarX is a standalone dock that groups and launches applications.
AquaSnap - Too many windows on your screen? Stop wasting your productivity.