File extension Details of SCR, SAVER, SDB, SYS, SYS, SAVEDSEARCH, SWP, NFO, GRP

Name:	SCR
File Type:	Windows Screensaver
Popularity:	3
Category:	system
File Description:	Screensaver file for Windows, typically stored in the main Windows directory; may be run automatically when the computer is inactive for several minutes (custom settings can be configured using the Screen Saver control panel). Screen savers are executable files that run when opened; they can display vector graphic or text animations, play slide shows, animation, or videos, and may include sound effects.
Open Programs:	Windows Used by the system adds screensaver options to Displays control panel

Name:	SAVER
File Type:	Mac OS X Screen Saver
Popularity:	3
Category:	system
File Description:	Screen saver for Mac OS X; runs when the computer has been idle for a specific amount of time; may be included with the Mac OS X operating system or created by a third-party developer. Apple screen saver files are typically stored in the /System/Library/Screen Savers directory; third-party screen savers that have been installed by the user are saved in the ~/Library/Screen Savers folder. Screen saver settings can be customized by opening System Preferences and selecting the "Desktop & Screen Saver" Preference Pane.
Open Programs:	Mac OS Apple Screen Saver (included with Mac OS X)

Name:	SDB
File Type:	Custom Application Compatibility Database
Popularity:	3
Category:	system
File Description:	Contains additional Windows registry information; patches the registry to make it compatible with newly installed application programs; can be installed on an individual system or on multiple systems over a network
Open Programs:	Windows Compatibility Database Installer Tool (Sdbinst.exe)

Name:	SYS
File Type:	Windows System File   (Most common)
Popularity:	5
Category:	system
File Description:	Stores system settings and variables used by the DOS and Windows operating systems; also contains functions that are used to run the operating system; SYS files typically should not be edited. IO.SYS is used by DOS and Windows 9x; it contains the default DOS device drivers, the DOS initialization program and processes MSDOS.SYS and CONFIG.SYS files. MSDOS.SYS contains the core operating system code for DOS, known as the DOS kernel; CONFIG.SYS is the primary configuration file used for the DOS operating system.
Open Programs:	Mac OS Parallels Desktop with Windows installed Windows Should not be opened manually May be viewed with a text editor

Name:	SYS
File Type:	Motorola Driver File
Popularity:	3
Category:	system
File Description:	Device driver used by Motorola cell phones; allows the phone to communicate with computer and transfer files to and from the device; typically installed with the software installation CD included with the cell phone. Example Motorola driver files include the "m56pci.sys" device controller and the "p2k.sys" file, which enables the P2Kman program to upload and download files from Motorola Vxxx cell phones.
Open Programs:	Windows Used by the operating system

Name:	SAVEDSEARCH
File Type:	Spotlight Saved Search
Popularity:	3
Category:	system
File Description:	Search saved using Apple's Spotlight program, included with Mac OS X 10.4 and later; saved as a "Smart Folder," which dynamically updates based on the search parameters saved with the folder. Spotlight searches can be saved by performing a Spotlight search and selecting "Show All" in the Spotlight menu, then clicking "Save" in the results window that appears in the Finder; the default location for saved searches is "~user/Library/Saved Searches."
Open Programs:	Mac OS Apple Finder (Mac OS X 10.4 or later)

Name:	SWP
File Type:	Swap File
Popularity:	3
Category:	system
File Description:	Section of the hard disk used by the operating system to swap information from memory to the hard disk; acts as virtual memory or simply a memory buffer; helps make accessing commonly used data more efficient.
Open Programs:	Mac OS Used by Mac OS X Windows Used by DOS and the Windows operating system

Name:	NFO
File Type:	System Information File
Popularity:	3
Category:	system
File Description:	Data file used by Microsoft's System Information Tool, a software utility for gathering system information and for diagnosing problems; stores information gathered by the program.
Open Programs:	Windows Microsoft System Information Tool (Msinfo32.exe)

Name:	GRP
File Type:	Windows Program Manager Group   (Most common)
Popularity:	3
Category:	system
File Description:	Defines a group of programs listed in the Windows Start Menu; i.e. "Main," "Games," "Accessories," or other folder. If a GRP file becomes corrupt, you can restore it to Windows default settings by using the Program Manager; select File->Run, then type "setup /p" and press Enter; this will rebuild the GRP file using Windows default settings.
Open Programs:	Windows Windows Program Manager Group Converter (grpconv.exe)

Name:	NT
File Type:	Windows NT Startup File
Popularity:	3
Category:	system
File Description:	System file such as CONFIG.NT or AUTOEXEC.NT that is loaded during the Windows NT boot process; contains settings and scripts that load resources for the Windows operating system; must not be modified, moved, or deleted or the computer may not be able to start up.
Open Programs:	Windows Used by Windows NT Not meant to be moved or altered