Ubuntu

Windows

Bring up window menu with with ‘Always on Top’ and ‘Minimize’ and ‘Maximize’ and above commands

Alt + Space

All hotkeys for Ubuntu

When Desktop Effects enabled
Enables the ‘scale’ effect, it shows all windows from all workspaces

Super + A

New shortcuts
Display files and folders

Super + F

New shortcuts
Display media files

Super + V

When Desktop Effects enabled
Invert colours for the whole screen

Super + M

New shortcuts
Open Trash can

Super + T

New shortcuts
Display hidden files in file manager

Ctrl + H

New shortcuts
Lock the PC

Super + L

When Desktop Effects enabled
Toggles ‘Show Desktop’

Ctrl + Super + D

New shortcuts
Open terminal

Ctrl + Alt + T

Desktop
Open Applications menu

Alt + F1

Desktop
Run an application by typing its name

Alt + F2

Desktop
Take a screenshot of whole screen

Print Screen

Desktop
Take a screenshot of the current windows

Alt + Print Screen

Desktop
Take a screenshot of a selected rectangle on the screen

↑   Shift + Print Screen

Windows
Switch between open windows

Alt + ⭾ Tab

When Desktop Effects enabled
Switch between currently-open windows across all workspaces.

Ctrl + Alt + ⭾ Tab

When Desktop Effects enabled
Spins the ‘cube’ that your workspaces reside on, allowing you to select the workspace you wish to use

Ctrl + Alt + ←  →

Windows
Move current window

Alt + F7

Windows
Resize current window

Alt + F8

Windows
Minimize current window

Alt + F9

Windows
Maximize current window

Alt + F10

Windows
Bring up window menu with with ‘Always on Top’ and ‘Minimize’ and ‘Maximize’ and above commands

Alt + Space

Windows
Return window to "normal" or previous size

Alt + F5

Windows
Close the window

Alt + F4

When Desktop Effects enabled
Enables an ‘expose’ like feature that presents you with all the windows you currently have open, allowing you to select the one you wish to give focus to

Ctrl + Alt +

When Desktop Effects enabled
Unfolds your workspace cube allowing you to see more than one of your workspaces at once, using the left and right cursor keys with this active will allow you to select the workspace you wish to use

Ctrl + Alt +

When Desktop Effects enabled
Enables the ‘scale’ effect, it shows all windows from the current workspace

Super + W

When Desktop Effects enabled
Invert colours of the focused window

Super + N

When Desktop Effects enabled
Zooms in on the screen

Super + Mouse wheel up and down

When Desktop Effects enabled
Select a region to zoom into, using a rectangle.

Super + Mouse middle click

When Desktop Effects enabled
Resize focused window

Alt + Mouse middle click

When Desktop Effects enabled
Move focused window

Alt + Mouse left click

When Desktop Effects enabled
Show window menu

Alt + Mouse right click

When Desktop Effects enabled
Zoom out, show workspace switcher

Super + S

Common application shortcuts
Copy the selected text/object

Ctrl + C

Common application shortcuts
Cut the selected text/object

Ctrl + X

Common application shortcuts
Paste/insert the selected text/object

Ctrl + V

Common application shortcuts
Select all text

Ctrl + A

Common application shortcuts
Make the selected text bold

Ctrl + B

Common application shortcuts
Make the selected text italic

Ctrl + I

Common application shortcuts
Underline the selected text

Ctrl + U

Common application shortcuts
Open a new document or window

Ctrl + N

Common application shortcuts
Save the current document

Ctrl + S

Common application shortcuts
Open another document

Ctrl + O

Common application shortcuts
Print the current document

Ctrl + P

Common application shortcuts
Undo the last change you made

Ctrl + Z

Common application shortcuts
Redo a change that you just undid

Ctrl + ↑   Shift + Z

System shortcuts
Restart the computer immediately, without saving open files

Ctrl + Alt + Del

System shortcuts
(numeric keypad) Rotate through supported screen resolutions

Ctrl + Alt + +

System shortcuts
(numeric keypad)  Rotate backwards through supported screen resolutions

Ctrl + Alt + -

Similar combinations for other applications


Microsoft Windows 7 (Windows)
Opens the title bar menu
Managing 'Windows' in Windows 7 - Move and Resize Active Window

Alt + Space


Microsoft Windows 7 (Windows)
Opens the title bar menu
Windows Explorer - Move and Resize Active Window

Alt + Space


Access 2010 (Windows)
Show the program icon menu
Manage Access Features - Menus

Alt + Space


Firefox (Linux)
Opens the title bar menu (default Windows feature)
Firefox Windows

Alt + Space


Firefox (Windows)
Opens the title bar menu (default Windows feature)
Firefox Windows

Alt + Space


Microsoft Windows 7 (Windows)
Opens the title bar menu
Windows Admin - Move and Resize Active Window

Alt + Space


Access 2010 (Windows)
Display the control menu
Manage Access Features - Manage Windows

Alt + Space


Microsoft Windows 7 (Windows)
Opens the title bar menu
Ease of Access and Magnifier - Move and Resize Active Window

Alt + Space


Access 2010 (Windows)
Show the program icon menu
Working with Text and Data - Menus

Alt + Space


Microsoft Windows 8 (Windows)
Opens the title bar menu
Managing Windows 8 Desktop Windows

Alt + Space


Adobe Photoshop CS5 (Windows)
Temporarily switch to Zoom Out tool
View Images

Alt + Space


Access 2010 (Windows)
Display the control menu
Working with Text and Data - Manage Windows

Alt + Space


Access 2010 (Windows)
Show the program icon menu
Working with Access Views - Menus

Alt + Space


Virtual DJ (Windows)
Mix
All Shortcuts

Alt + Space


Microsoft Excel 2013 (Windows)
Display the Control menu for Main Excel window
Manage Multiple Workbooks

Alt + Space


Access 2010 (Windows)
Display the control menu
Working with Access Views - Manage Windows

Alt + Space


Linux Mint (Linux)
Open window menu
Current Application Window

Alt + Space


Access 2010 (Windows)
Show the program icon menu
The Rest - Menus

Alt + Space


Microsoft Word 2013 (Windows)
Open the window menu
The Rest

Alt + Space


Skype for Business (Lync) 2016 (Windows)
Open the System menu. Alt opens the menu bar
Main Window

Alt + Space


Microsoft Windows 10 (Windows)
Open dialog box on active window
The Rest

Alt + Space


Camtasia 8 (Windows)
Display system menu
Standard Windows Shortcuts

Alt + Space


Microsoft Excel 2010 (Windows)
Display the Control menu for Main Excel window.
Manage Multiple Workbooks

Alt + Space


Skype for Business (Lync) 2016 (Windows)
Open tab window’s system menu
Tabbed conversations

Alt + Space


Access 2016 (Windows)
Display Control Menu
Windows/Content Switching/Navigation

Alt + Space


Access 2010 (Windows)
Display the control menu
The Rest - Manage Windows

Alt + Space


Steinberg Cubase 9 (Windows)
Play selection range
Transport

Alt + Space


Kingsoft Spreadsheets 2016 (Windows)
Display Control Menu from Program Window
Display Various Objects

Alt + Space


Raspbian
Open program menu
General

Alt + Space


i3 (window manager)
Toggle focus mode
Basic shortcuts

Alt + Space


Modo (Windows)
Animation shortcuts (only in the Animation layout)
Pie Menus

Alt + Space


Modo (Windows)
Quick access pop-over
General Modeling

Alt + Space


Affinity Photo
Non Breaking Space
Text shortcuts

Alt + Space


Openbox
Show the client menu for the active window
General

Alt + Space


LXDE
Window menu
LDXE / Openbox

Alt + Space


Xfce
Window operations menu
Window manipulation

Alt + Space


Alteryx
Show the System menu
Other shortcuts

Alt + Space


Virtual DJ 2018
Mix now
General

Alt + Space


Clip Studio Paint Pro
Zoom (scale down)
Frequently used shortcuts

Alt + Space


Microsoft Paint
Equivalent to right-clicking on the title bar
Alt key menu

Alt + Space


Adobe Photoshop CC
Switch to Zoom Out tool
View images

Alt + Space


KDE Plasma Desktop
Run Command Interface
Working with windows

Alt + Space


GNOME
Activate the window menu
Windows

Alt + Space


Linux Mint
Bring up the window menu for an application
Frequently used shortcuts

Alt + Space


Microsoft FrontPage
Display the window shortcut menu (Control menu).
Access and use menus and toolbars

Alt + Space


Ardour
Play edit range
Edit Point Playback

Alt + Space


Android
Search page
General

Alt + Space


Maple
Access Window Menu
TTY Mode Functions in Command-line Maple

Alt + Space


NewsBin Pro
Open the shortcut menu for the active window
Standard Windows keyboard navigation

Alt + Space


REAPER
Transport: Play (skip time selection)
Section: Main

Alt + Space


WPS Office
Displays the Control menu for the program window
General

Alt + Space


Blender
Orientation menu
General

Alt + Space


Microsoft Access 2016
Show the program icon menu (on the program title bar), also known as the control menu
Navigate in the Access workspace

Alt + Space


Remote Desktop Services
Remote Desktop shortcut: Alt + D. Display the system menu
Equivalent remote shortcuts

Alt + Space


Launchy
Bring up Launchy
General

Alt + Space


Windows 3.1
Open Control Box
Menu features

Alt + Space


Microsoft Excel 2016
Displays the Control menu for the Excel window
Other useful shortcut keys

Alt + Space


Microsoft Projects 2007 (Windows)
Activate the Control menu.
Navigate views and windows

Alt + Space


Gnome 3.0 (Linux)
Open the window menu.
Window Commands

alt + space


Gnome 2.32 (Linux)
Open the window menu.
Window Management

Alt + Space


Internet Explorer (Windows)
Opens the title bar menu.
Manage IE8 Windows

Alt + Space


Dynamics CRM 2011 (Windows)
Display the System menu for the active window
General Shortcuts

Alt + Space


Microsoft Windows Vista (Windows)
Open the title bar menu.
Work with Vista (Application) Windows

Alt + Space


Microsoft Excel 2007 (Windows)
Open the shortcut menu of a dialog box.
Microsoft Clip Organizer main

Alt + Space


Adobe Photoshop CS4 (Windows)
Switch to Zoom Out tool
Shortcut Keys for viewing images

Alt + Space


Windows Media Player 11 (Windows)
Opens the title bar menu (default Windows feature).
Manage the Media Player Windows

Alt + Space


Microsoft Word 2010 (Windows)
Open the window menu
The Rest

Alt + Space


DBeaver 6.0.3
Navigate to the link in active cell
Data viewer

Alt + Space


Nano
Go back one word
Navigation

Alt + Space