Openbox

General

Lower the active window behind other windows, and activate the last window that was in use

Alt + Esc

All hotkeys for Openbox

General
Close the active window

Alt + F4

General
Show the client menu for the active window

Alt + Space

General
Cycle between windows on the desktop

Alt + ⭾ Tab

General
Cycle between windows on the desktop in reverse order

Alt + ↑   Shift + ⭾ Tab

General
Cycle between panel and desktop windows on the desktop

Ctrl + Alt + ⭾ Tab

General
Hide all windows to show the desktop

Win + D

General
Run the Konqueror file manager (This is an example of how to run a program with a key binding)

Win + E

General
Lower the active window behind other windows, and activate the last window that was in use

Alt + Esc

General
Go to the first desktop instantly

Win + F1

General
Go to the second desktop instantly

Win + F2

General
Go to the third desktop instantly

Win + F3

General
Go to the fourth desktop instantly

Win + F4

General
Open the desktop switching dialog, to go to the desktop to the left of the current one

Ctrl + Alt +

General
Open the desktop switching dialog, to go to the desktop to the right of the current one

Ctrl + Alt +

General
Open the desktop switching dialog, to go to the desktop above the current one (This will only be useful if you use a pager to set up a desktop layout with multiple rows)

Ctrl + Alt +

General
Open the desktop switching dialog, to go to the desktop below the current one (This will only be useful if you use a pager to set up a desktop layout with multiple rows)

Ctrl + Alt +

General
Open the desktop switching dialog, to go to the desktop to the left of the current one, and bring the active window with you

↑   Shift + Alt +

General
Open the desktop switching dialog, to go to the desktop to the right of the current one, and bring the active window with you

↑   Shift + Alt +

General
Open the desktop switching dialog, to go to the desktop above the current one, and bring the active window with you (This will only be useful if you use a pager to set up a desktop layout with multiple rows)

↑   Shift + Alt +

General
Open the desktop switching dialog, to go to the desktop below the current one, and bring the active window with you (This will only be useful if you use a pager to set up a desktop layout with multiple rows)

↑   Shift + Alt +

General
Move a window

Alt + Mouse left click

General
Resize a window. The window is resized towards the edge that the mouse is nearest to. So use Alt + Right mouse button in the top right corner of a window to resize that corner

Alt + Mouse right click

General
Change desktops forward and backward

Alt + Mouse wheel up and down

Similar combinations for other applications


Microsoft Windows 7 (Windows)
Cycle through programs on taskbar in the order they were opened or accessed
Managing 'Windows' in Windows 7 - Switch between Applications

Alt + Esc / Alt + Shift + Esc


Microsoft Windows 7 (Windows)
Cycle through programs on taskbar in the order they were opened or accessed
Windows Explorer - Switch between Applications

Alt + Esc / Alt + Shift + Esc


Microsoft Windows 7 (Windows)
Cycle through programs on taskbar in the order they were opened or accessed
Windows Admin - Switch between Applications

Alt + Esc / Alt + Shift + Esc


Microsoft Windows 7 (Windows)
Cycle through programs on taskbar in the order they were opened or accessed
Ease of Access and Magnifier - Switch between Applications

Alt + Esc / Alt + Shift + Esc


Linux Mint (Linux)
Toggle Scale view (display all windows on current Workspace)
Manage Windows and Workspaces

Ctrl + Alt + Arrow Down / Alt + Esc


LXDE
Hide window
LDXE / Openbox

Alt + Esc


Microsoft Paint
Minimizes MS Paint interface
Alt key menu

Alt + Esc


GNOME
Switch between windows in the current workspace. Hold down Shift for reverse order.
Getting around desktop

Alt + Esc


Gnome 3.0 (Linux)
Cycle through open windows without invoking the alt+tab switcher.
Manage Windows and Workspaces

alt + esc


Microsoft Windows Vista (Windows)
Cycle Through the Applications in the order they were opened/accessed.
Working on the Vista Desktop

Alt + Esc / Alt + Shift + Esc