Proprietary and Open Source Software

Introduction
Proprietary Software (Close source software) means the company that developed the software owns the software, and no one may duplicate it or distribute it without that company's permission.User must pay the software if they want to use the proprietary software.
Example: Microsoft Office 2007,Adobe Photoshop CS4,Adobe Flash CS4, and Windows 7.

Open Source Software that is free to use and which provides the original source code used to create it so that advance user can modify it to make it work better for them.
Example: Linux,GIMP,Mozila Firefox 3.0, and PeaZip.

Different between Proprietary and Open Source Software

Types and Usage of Utility Programs

1. File Compression- A program that shrinks the size of files so they require less storage space and reduce transmission time if sent over internet.
Examples:
i)PeaZip (opensource)
ii)WinZip

iii)WinRar

2.File Management- Is a program that performs functions related to files such as delete,copy,rename,move, view and disk management such as format & copies disk.
Examples:
i)Windows Explorer
ii)Free Commander (freeware)
iii)SE-Explorer (freeware)

3.Diagnostic Utility- 
i)Compiles technical information about a computer's hardware and certain system software.
ii)Prepares a report outlining any identified problems.
Examples:
i)PC Diagnostic
ii)Advance System Care
iii)CCleaner

4. Antivirus- That protects a computer against viruses by identifying and removing any computer viruses found in a memory,storage,media or incoming files.
Examples:
i)Norton Antivirus
ii)Kaspersky 2011 (proprietary)
iii)Avira 7.1

5. Defragmenter- Program that reorganises files and unused space on a computer hard disk.
Examples:
i)Disk Defragmenter (built-in-Utility)
ii)MyDefrag (freeware)
iii)Defraggler (freeware)

6.Disk Scanner- That checks the hard drive of your computer for errors and bad sectors.
Examples:
i)ScanDisk (built in windows utility)
ii)Scanner (open source)
iii)HDDScan (freeware)

Utility Programs

Utility Programs
Define:
Also known as sevices programs,is a type of system software that allow user to perform maintenence-type tasks,usually related to managing a computer, its device,or its program.

Two Type Of Utility Programs
1.Built in (windows explorer,disk cleanup, disk defragment)
2.Stand Alone Utility (winzip,norton utility,kaspersky)