Various OS used in Computers

Microsoft Corporation (Windows)
NCR Corporation (TMX)
Acorn Computers (RISC OS)
Amiga Inc
Apple Inc (Mac OS)
Apollo Computer (Domain/OS)
Atari (Atari OS)
BAE Systems
Be Inc
Bell Labs (UNIX)
Digital Research, Inc (DOS)
Fujitsu (Towns OS)
Google (Android)
Hewlett-Packard (HP-UX)
Intel Corporation (iRMX)
IBM
LynuxWorks (LynxOS)
NCR Corporation (TMX)
Samsung Electronics (Bada)
Unisys
UNIVAC
 

Keyboard shortcuts Firefox | Firefox shortcuts to work fast

Navigation

Command	Shortcut
Back	Alt + ← Backspace
Forward	Alt + → Shift + Backspace
Home	Alt + Home
Open File	Ctrl + O
Reload	F5 Ctrl + R
Reload (override cache)	Ctrl + F5 Ctrl + Shift + R
Stop	Esc

 

Current Page

Command	Shortcut
Go to Bottom of Page	End
Go to Top of Page	Home
Move to Next Frame	F6
Move to Previous Frame	Shift + F6
Print	Ctrl + P
Save Page As	Ctrl + S
Zoom In	Ctrl + +
Zoom Out	Ctrl + -
Zoom Reset	Ctrl + 0

Editing

Command	Shortcut
Copy	Ctrl + C
Cut	Ctrl + X
Delete	Del
Paste	Ctrl + V
Paste (as plain text)	Ctrl + Shift + V
Redo	Ctrl + Y
Select All	Ctrl + A
Undo	Ctrl + Z

Search

Command	Shortcut
Find	Ctrl + F
Find Again	F3 Ctrl + G
Find Previous	Shift + F3 Ctrl + Shift + G
Quick Find within link-text only	'
Quick Find	/
Close the Find or Quick Find bar	Esc	- when the Find or Quick Find bar is focused
Search bar	Ctrl + K Ctrl + E
Select or Manage Search Engines	Alt + ↑ Alt + ↓ F4	- when Search Bar is focused