File menu|Alt+F, or F10 then F|Ctrl+F2, then F (requires full keyboard access active, using System Preferences > Keyboard > Keyboard Shortcuts > Full Keyboard Access > All Controls. Alternatively use Ctrl+F1 to toggle this setting.)|Alt+F
Edit menu|Alt+E|Ctrl+F2, then E|Alt+E
View menu|Alt+V|Ctrl+F2, then V|Alt+V
Undo|Ctrl+Z, or Alt+←Backspace|⌘Cmd+Z|Ctrl+Z
Redo|Ctrl+Y|⇧Shift+⌘Cmd+Z|⇧Shift+Ctrl+Z, or Ctrl+Y
Cut|Ctrl+X, or ⇧Shift+Del|⌘Cmd+X|Ctrl+X
Copy|Ctrl+C, or Ctrl+Ins|⌘Cmd+C|Ctrl+C
Paste|Ctrl+V, or ⇧Shift+Ins|⌘Cmd+V|Ctrl+V
Paste special|Ctrl+Alt+V||Ctrl+⇧Shift+V
Select all|Ctrl+A|⌘Cmd+A|Ctrl+A
New folder|Ctrl+⇧Shift+N|⇧Shift+⌘Cmd+N|Ctrl+⇧Shift+N
Applications menu|⊞Win or Ctrl+Esc||Alt + "n" e.g. for _File_ Alt + F
Lock desktop|⊞Win+L|Ctrl+⇧Shift+Eject or MBR Ctrl+⇧Shift+Pwr (If "Require password after sleep or screen saver" is enabled in "System Preferences — Security & Privacy")|Ctrl+Alt+L
Show desktop|⊞Win+D or ⊞Win+M (then use ⊞Win+⇧Shift+M to bring back all windows)|F11|Ctrl+Alt+D
Log out user||⇧Shift+⌘Cmd+Q|Ctrl+Alt+Delete
Switch user|⊞Win+L||
Task manager|Ctrl+⇧Shift+Esc or Ctrl+Alt+Delete|Alt+⌘Cmd+Esc|Ctrl+Esc
Rename object|F2|↵Enter|F2
Open file or program|↵Enter|⌘Cmd+O|↵Enter
Switch window (next/previous)|Alt+Tab↹ / ⇧Shift+Alt+Tab↹|⌘Cmd+Tab↹ / ⇧Shift+⌘Cmd+Tab↹|Alt+Tab↹ / Alt+⇧Shift+Tab↹
Switch window without dialog (next/previous)|Alt+Esc / ⇧Shift+Alt+Esc|⌘Cmd+` / ⌘Cmd+~ Only works within single Applications|
Run application|⊞Win, enter executable name or ⊞Win+R, enter executable name|⌘Cmd+Space, enter executable name|Alt+F2, enter executable name
Search|⊞Win, enter search or ⊞Win+F|⌘Cmd+Space / Alt+F |
Save screenshot of entire screen as file|Windows+Print Screen|⇧Shift+⌘Cmd+3|Print Screen set the name and click "Save".
Copy screenshot of entire screen to clipboard|Print Screen or Ctrl+Print Screen|Ctrl+⇧Shift+⌘Cmd+3|Print Screen click "Copy to Clipboard".
Save screenshot of window as file||⇧Shift+⌘Cmd+4 then Space|Alt+Print Screen set the name and click "Save". GNOME
Copy screenshot of window to clipboard|Alt+Print Screen|Ctrl+⇧Shift+⌘Cmd+4 then Space|Alt+Print Screen click "Copy to Clipboard". GNOME
Delete char to the right of cursor|Del or Fn+←Backspace|Del, or Ctrl+d, or Fn+←Backspace |
Delete word to the right of cursor|Ctrl+Del|⌥Opt+Del or ⌥Opt+Fn+←Backspace|Ctrl+Del
Delete word to the left of cursor|Ctrl+←Backspace|⌥Opt+←Backspace|Ctrl+←Backspace
Start of line|Home, or Fn+←|⌘Cmd+← or Ctrl+A|Home
End of line|End, or Fn+→|⌘Cmd+→ or Ctrl+E|End
Start of document|Ctrl + Home|⌘Cmd+↑|Ctrl + Home
End of document|Ctrl + End|⌘Cmd+↓|Ctrl + End
Previous word|Ctrl+←|⌥Opt+←|Ctrl+←
Next word|Ctrl+→|⌥Opt+→|Ctrl+→
Previous line|↑|↑, or Ctrl+p|↑
Next line|↓|↓, or Ctrl+n|↓
Previous line break (paragraph)|Ctrl+↑|⌥Opt+↑|Ctrl+↑ (kword or GNOME)
Next line break|Ctrl+↓|⌥Opt+↓|Ctrl+↓ (kword or GNOME)
Move the cursor down the length of the viewport|Page Down|Fn+↓|Page Down
Move the cursor up the length of the viewport|Page Up|Fn+↑|Page Up
Find|Ctrl+F|⌘Cmd+F, ⌘Cmd+E (Search with current selection)|Ctrl+F, Ctrl+K (GNOME; interactive search)
Next search result|F3|⌘Cmd+G|Ctrl+G (GNOME) or F3 (KDE)
Previous search result|⇧Shift+F3|⇧Shift+⌘Cmd+G|⇧Shift+Ctrl+G (GNOME) or ⇧Shift+F3 (KDE)
Search and replace|Ctrl+H|⌘Cmd+F|Ctrl+H (GNOME) or Ctrl+R (KDE)
Bold|Ctrl+B|⌘Cmd+B|Ctrl+B
Underline|Ctrl+U|⌘Cmd+U|Ctrl+U
Italic|Ctrl+I|⌘Cmd+I|Ctrl+I
Uppercase|⇧Shift+F3|⌥Opt+⌘Cmd+C|⇧Shift+F3
Lowercase|⇧Shift+F3|⌥Opt+⌘Cmd+C|⇧Shift+F3
Superscript|Ctrl+⇧Shift++|Ctrl+⌘Cmd++ (Pages and Adobe Applications only?)|Ctrl+⇧Shift+P
Subscript|Ctrl+=|Ctrl+⌘Cmd+- (Pages and Adobe Applications only?)|Ctrl+⇧Shift+B
Previous location in history|Alt+← or ←Backspace|⌘Cmd+ ⌘Cmd+←|Alt+←
Next location in history|Alt+→ or ⇧Shift+←Backspace (web browser only)|⌘Cmd+] or ⌘Cmd+→|Alt+→
Go up one level in the navigation hierarchy|Alt+↑(Vista, 7 or 8 only) or ←Backspace(Windows Explorer)|⌘Cmd+↑|Alt+↑
Startup page|Alt+Home|⌘Cmd+Home|Ctrl+Home (KDE) / Alt+Home (GNOME)
Bookmarks menu|Ctrl+B|⌘Cmd+B (Firefox)|Alt+B
URL Shortcuts (Adds www. + .com)|Ctrl+↵Enter|⌘Cmd+↵Enter (Firefox) or Ctrl+↵Enter (Chrome)|Ctrl+↵Enter
URL Shortcuts (Adds www. + .org)|Ctrl+⇧Shift+↵Enter|⇧Shift+⌘Cmd+↵Enter (Firefox)|Ctrl+⇧Shift+↵Enter
URL Shortcuts (Adds www. + .net)|⇧Shift +↵Enter|⇧Shift +↵Enter (Firefox)|⇧Shift +↵Enter
Bookmark page|Ctrl+D|⌘Cmd+D|Ctrl+B / Ctrl+D
Manage bookmarks|Ctrl+B|⌘Cmd+⌥Opt+B (Chrome/Safari) or ⌘Cmd+⇧Shift+B (Firefox)|Ctrl+⇧Shift+R / Ctrl+B
Address bar|Ctrl+L or F6 or Alt+D|⌘Cmd+L|Ctrl+L or Alt+D or F6
Search bar|Ctrl+E|⌘Cmd+E (Opera) or ⌘Cmd+K (Firefox) or ⌥Opt+⌘Cmd+F (Safari)|Ctrl+K
Refresh a webpage|F5 or Ctrl+R|⌘Cmd+R|F5 or Ctrl+R
New window|Ctrl+N|⌘Cmd+N (Chrome)|Ctrl+N
Zoom in|Ctrl++|⌘Cmd++|Ctrl++
Zoom out|Ctrl+-|⌘Cmd+-|Ctrl+-
Zoom 100%|Ctrl+0|⌘Cmd+0|Ctrl+0
New tab|Ctrl+T|⌘Cmd+T|Ctrl+⇧Shift+N or Ctrl+⇧Shift+T or Ctrl+T
Close tab|Ctrl+W|⌘Cmd+W|Ctrl+W or Ctrl+F4
Close other tabs||⌘Cmd+⌥Opt+W (Safari)|
Next tab|Ctrl+Tab↹|Control+Tab↹ or ⌘Cmd+⇧Shift+→ (Safari)|Ctrl+PageDown or Ctrl+Tab↹ or Ctrl+.
Previous tab|Ctrl+⇧Shift+Tab↹|⇧Shift+Control+Tab↹ or ⌘Cmd+⇧Shift+← (Safari)|Ctrl+PageUp or Ctrl+⇧Shift+Tab↹ or Ctrl+,
Go to tab-n|Ctrl+n (Chrome/Firefox)|⌘Cmd+n (Chrome)|Alt+n (Chrome/Firefox) or Ctrl+n (Chrome)
Reopen closed tab|Ctrl+⇧Shift+T|⌘Cmd+⇧Shift+T (Firefox/Opera/Chrome)|Ctrl+⇧Shift+T (Firefox/Opera/Chrome)
Reopen closed window|Ctrl+⇧Shift+N (Firefox)| |