SketchUp

Misc.

Tape measure tool

Alt + M

All hotkeys for SketchUp

Select tool
Select tool

Space

Eraser tool
Hide

↑   Shift

Select tool
Subtract

Ctrl + ↑   Shift

Paint bucket tool
Paint bucket tool

X

Eraser tool
Soften/Smooth

Ctrl

Eraser tool
Unsoften/Unsmooth

↑   Shift + Ctrl

Paint bucket tool
Sample paint

Alt

Eraser tool
Eraser tool

E

Misc.
Rectangle tool

R

Misc.
Line tool

L

Misc.
Circle tool

C

Misc.
Arc tool

A

Misc.
Make group

G

Misc.
Tape measure tool

Alt + M

Misc.
Freehand tool

'

Misc.
Dimension tool

↑   Shift + T

Misc.
Text tool

↑   Shift + D

Misc.
Protractor tool

Alt + P

Misc.
Section tool

Ctrl + Alt + S

Misc.
Axes tool

Y

Misc.
Move tool

M

Misc.
Push/pull tool

U

Misc.
Rotate tool

Alt + R

Misc.
Polygon tool

\

Misc.
Scale tool

S

Misc.
Offset tool

O

Misc.
Orbit tool

Mouse middle click

Misc.
Make component

B

Misc.
Zoom tool

Alt + Z

Misc.
Zoom window tool

Z

Misc.
Zoom extents tool

↑   Shift + Z

Misc.
Previous view

⭾ Tab

Misc.
Walk tool

W

Misc.
Look around tool

J

Misc.
Follow me tool

Alt + F

General
Help

F1

General
New

Ctrl + N

General
Open

Ctrl + O

General
Save

Ctrl + S

General
Cut

Ctrl + X

General
Copy

Ctrl + C

General
Paste

Ctrl + V

General
Erase

Del

General
Erase

D

General
Undo

Ctrl + Z

General
Redo

Ctrl + Y

General
Print

Ctrl + P

General
Toggle shadows

Alt + S

General
Layer window

↑   Shift + E

General
Add page

Alt + A

Angle
Iso

F8

Angle
Top

F2

Angle
Front

F3

Angle
Right

F4

Angle
Back

F5

Angle
Left

F6

Surface
Wireframe

1

Surface
Hidden line

2

Surface
Shaded

3

Surface
Shaded with textures

4

Surface
X-Ray

T

Surface
Monochrome

Alt + 6

Main window
Toggle dialogs

F

Main window
SketchUp preferences

↑   Shift + P

Main window
Model info

Ctrl + 1

Main window
Outliner

Ctrl + Q

Main window
Entity info

I

Main window
Components

↑   Shift + O

Main window
Pages

Alt + L

Main window
Shadow settings

↑   Shift + S

Display
Display settings

Ctrl + 2

Display
Toggle transperancy

5

Display
Toggle edges

N

Display
Toggle profile lines

K

Display
Toggle sky

Home

Display
Toggle ground

End

Display
Toggle perspective / parallel

V

Display
Section planes

Ctrl + Alt + P

Display
Section cuts

Ctrl + Alt + C

Hide / select
Close group / component

↑   Shift + G

Hide / select
Hide

H

Hide / select
Unhide last

↑   Shift + L

Hide / select
Unhide all

↑   Shift + A

Hide / select
Deselect all

Ctrl + T

Hide / select
Hide construction geometry

Q

Hide / select
Unhide construction geometry

↑   Shift + Q

Hide / select
Erase all construction geometry

Alt + E

Similar combinations for other applications

Microsoft Outlook 2010 (Windows)
Choose From account from which to send message
Messages in Main View - Manage Messages

Alt + M

Tally 9.0 (Windows)
Email the report
General Shortcuts

Alt + M

Microsoft Outlook 2010 (Windows)
Choose From account from which to send message
Messages in Compose View - Manage Messages

Alt + M

Microsoft Outlook 2010 (Windows)
Choose From account from which to send message
Calendar Shortcuts - Manage Messages

Alt + M

VLC Media Player (MacOS)
Open media menu
Manage VLC, Playlists, and Special Commands

Alt + M

WinRAR (Windows)
Add archive comment
Commands Menu

Alt + M

Directory Opus (Windows)
Move menu
Operations Toolbar

Alt + M

Pro Tools (Windows)
Paste special - Merge
Edit Menu

Alt + M

Calibre (Windows)
Merge selected records, keeping originals
Library Management

Alt + M

Qt Creator (Windows)
Activate Bookmarks pane
General

Alt + M

Autodesk Maya 2015 (Windows)
Default Hotbox Style (Zones and Menu Rows)
Interfaces

Alt + M

Skype for Business (Lync) 2016 (Windows)
Start Meet Now
Main Window

Alt + M

Microsoft Outlook 2016 (Windows)
Choose the account from which to send a message
Mail

Alt + M

Autodesk Maya 2017 (Windows)
Default Hotbox Style (Zones and Menu Rows)
Interfaces

Alt + M

Microsoft Word 2016 (Windows)
Mailing tab
Access Shortcut

Alt + M

Daz 3D Bryce 7 (Windows)
edit 3D Textures
Object

Alt + M

Daz 3D Bryce 7 (Windows)
Deep Texture Editor
Palettes and Labs

Alt + M

ACDSee (Windows)
Move current item to a folder you specify
View Mode

Alt + M

Steinberg Cubase 9 (Windows)
Mute/unmute objects
Edit

Alt + M

Lightworks (Windows)
Selected Section of Audio Moves from Source Track to Destination Track
31 Shortcuts for Lightworks (Windows)

Alt + M

eSignal (Windows)
MOB
49 Shortcuts for eSignal (Windows)

Alt + M

Sierra Chart (Windows)
Move Drawing
Tools Menu

Alt + M

Synfig (Windows)
Select Mirror Tool
73 Shortcuts for Synfig (Windows)

Alt + M

Creo Parametric (Windows)
Model Menu
26 Shortcuts for Creo Parametric (Windows)

Alt + M

Visual Assist
List methods in file
Text editor

Alt + M

TalkDesk Callbar
Mute call
General

Alt + M

PSPad (Windows)
Clipboard Monitor window
Tools

Alt + M

Wordfast Pro (Windows)
Open TM Menu
100 Shortcuts for Wordfast Pro (Windows)

Alt + M

WinRAR
Add archive comment
Commands menu

Alt + M

Gmsh 4.1.4
Toggle visibility of all mesh entities
General

Alt + M

GeoGebra
mu μ (Press Shift for upper-case: Μ)
Mac desktop

Alt + M

NetHack
Special ability
Magic

Alt + M

Altium Designer (Windows)
Fit model
PCB3D Library Editor Shortcuts

Alt + M

Winamp
Minimize Winamp
General

Alt + M

Total War: Attila
Toggle music
Universal

Alt + M

Microsoft Word 2016
To manage Mail Merge tasks, or to work with envelopes and labels, open Mailings tab
Ribbon: Access keys

Alt + M

Ardour
Switch between editor and mixer window
Window visibility

Alt + M

PSPad
Clipboard Monitor window
Tools

Alt + M

REAPER
Edit: Mute events (toggle)
Section: MIDI Inline Editor

Alt + M

Qt Creator
Activate Bookmarks pane
General

Alt + M

Google Sheets
(in Google Chrome)  Form menu
Open a menu

Alt + M

Lightworks
Selected section of audio moves from source track to destination track
General

Alt + M

Python IDLE for Windows
Open module
File menu

Alt + M

Microsoft Excel 2016
Open the Formulas tab and insert, trace, and customize functions and calculations
Ribbon: Access keys for tabs

Alt + M

ACDSee
Moves the current item to a folder you specify
General

Alt + M

Blender
Merge menu
Editing mode

Alt + M

Notepad2
Modify lines
Block

Alt + M

Nano
Mouse support enable/disable
Enable / Disable settings

Alt + M