Notepad++ 6 (Windows)

Edit menu

Insert Tabulation or Space (Indent)

Tab (selection of one / more full lines)

All hotkeys for Notepad++ 6 (Windows)

File menu
Open File

Ctrl + O

File menu
New File

Ctrl + N

File menu
Save File

Ctrl + S

File menu
Save As

Ctrl + Alt + S

File menu
Save All

Ctrl + Shift + S

File menu
Print

Ctrl + P

File menu
Exit

Alt + F4

File menu
Next Document (also shows list of open files). Can be disabled - see Settings/Preferences/Global.

Ctrl + Tab

File menu
Previous Document (also shows list of open files). Can be disabled - see above.

Ctrl + Shift + Tab

File menu
Go to the n-th document on tab bar, n between 1 and 9.

Ctrl + 1 .. 9 on Numpadn

File menu
Next document

Ctrl +PgUp

File menu
Previous document

Ctrl +PgDn

File menu
Close Current Document

Ctrl + W

Edit menu
Copy

Ctrl + C

Edit menu
Copy

Ctrl + Insert

Edit menu
Copy current line to clipboard

Ctrl + Shift + T

Edit menu
Cut

Ctrl + X

Edit menu
Cut

Shift + Delete

Edit menu
Paste

Ctrl + V

Edit menu
Paste

Shift + Insert

Edit menu
Undo

Ctrl + Z

Edit menu
Undo

Alt + Backspace

Edit menu
Redo

Ctrl + Y

Edit menu
Select All

Ctrl + A

Edit menu
Column Mode Select

Alt + Shift +Arrow keys, / Alt + Left mouse click

Edit menu
Start new selected area. Only multiple stream areas ca be selected this way.

Ctrl + Left mouse click

Edit menu
Column Editor

Alt + C

Edit menu
Duplicate Current Line

Ctrl + D

Edit menu
Switch the current line position with the previous line position

Ctrl + T

Edit menu
Move Current Line, or current selection if a single stream, Down

Ctrl + Shift +Down

Edit menu
Delete Current Line

Ctrl + L

Edit menu
Split Lines

Ctrl + I

Edit menu
Join Lines

Ctrl + J

Edit menu
Launch GoToLine Dialog

Ctrl + G

Edit menu
Single line comment

Ctrl + Q

Edit menu
Single line uncomment

Ctrl + Shift + Q

Edit menu
Toggle single line comment

Ctrl + K

Edit menu
Block comment

Ctrl + Shift + K

Edit menu
Insert Tabulation or Space (Indent)

Tab (selection of one / more full lines)

Edit menu
Remove Tabulation or Space (outdent)

Shift +Tab (selection of one / more full lines)

Edit menu
Delete to start of word

Ctrl + Backspace

Edit menu
Delete to end of word

Ctrl + Delete

Edit menu
Delete to start of line

Ctrl + Shift + Backspace

Edit menu
Delete to end of line

Ctrl + Shift + Delete

Edit menu
Convert to lower case

Ctrl + U

Edit menu
Convert to UPPER CASE

Ctrl + Shift + U

Edit menu
Go to matching brace

Ctrl + B

Edit menu
Launch CallTip ListBox

Ctrl + Space

Edit menu
Launch Function Completion ListBox

Ctrl + Shift + Space

Edit menu
Launch Path Completion ListBox

Ctrl + Alt + Space

Edit menu
Launch Word Completion ListBox

Ctrl + Enter

Edit menu
Text Direction RTL

Ctrl + Alt + R

Edit menu
Text Direction LTR

Ctrl + Alt + L

Edit menu
Split line downwards, or create new line

Enter

Edit menu
Split line downwards, or create new line

Shift + Enter

Edit menu
SInsert new unindented line above current

Ctrl + Alt + Enter

Edit menu
SInsert new unindented line below current

Ctrl + Alt + Shift + Enter

Search menu
Launch Find Dialog

Ctrl + F

Search menu
Launch Find / Replace Dialog

Ctrl + H

Search menu
Find Next

F3

Search menu
Find Previous

Shift + F3

Search menu
Find in Files

Ctrl + Shift + F

Search menu
Switch to Search results window (was Activate sub view before v5.2)

F7

Search menu
Find (volatile) Next

Ctrl + Alt + F3

Search menu
Find (volatile) Previous

Ctrl + Alt + Shift + F3

Search menu
Select and Find Next (was Find (Volatile) Next prior to v5.6.5)

Ctrl + F3

Search menu
Select and Find Previous (was Find (Volatile) Previous prior to v5.6.5)

Ctrl + Shift + F3

Search menu
Go to next found

F4

Search menu
Go to previous found

Shift + F4

Search menu
Incremental Search

Ctrl + Shift + I

Search menu
Jump Down (to next text marked using n-th stye. n is 1 to 5, or 0 for default Found style.

Ctrl + N

Search menu
Jump Up (to next text marked using n-th stye. n is 1 to 5, or 0 for default Found style.

Ctrl + Shift + N

Search menu
Toggle Bookmark

Ctrl + F2

Search menu
Go To Next Bookmark

F2

Search menu
Go To Previous Bookmark

Shift + F2

Search menu
Go to Matching Brace (caret must be on a brace)

Ctrl + B

Search menu
Select All between Matching Braces (caret must be on a brace)

Ctrl + Alt + B

View menu
or Ctrl + mouse wheel button (if any) Zoom in (+ or up) and Zoom out (- or down)

Ctrl +( + ] / - on numeric keypad

View menu
Restore the original size from zoom

Ctrl +Keypad/

View menu
Toggle Full Screen Mode

F11

View menu
Toggle Post-It Mode

F12

View menu
Collapse the Current Level

Ctrl + Alt + F

View menu
Uncollapse the Current Level

Ctrl + Alt + Shift + F

View menu
Fold All

Alt + 0

View menu
Collapse the Level (1~8)

Alt +(1~8)

View menu
Unfold All

Alt + Shift + 0

View menu
Uncollapse the Level (1~8)

Alt + Shift +(1~8)

Macro menu
Start to record /Stop recording the macro

Ctrl + Shift + R

Macro menu
Play recorded macro

Ctrl + Shift + P

Macro menu
Trim Trailing and Save

Alt + Shift + S

Run menu
Launch Run Dialog

F5

Run menu
Get PHP help

Alt + F1

Run menu
Google search

Alt + F2

Run menu
Wikipedia search

Alt + F3

Run menu
Open file (name at cursor)

Alt + F5

Run menu
Open file in another instance (name at cursor)

Alt + F6

Run menu
Open in Chrome

Ctrl + Alt + Shift + R

Run menu
Open in Firefox

Ctrl + Alt + Shift + X

Run menu
Open in IE

Ctrl + Alt + Shift + I

Run menu
Open in Safari

Ctrl + Alt + Shift + F

Run menu
Send via Outlook

Ctrl + Alt + Shift + O

Similar combinations for other applications