Software.

Question	Answer
Proprietary	Software made by a company to be used by many people, Source code is not distributed and it cannot be edited or changed, You will need a license to use it. Normally developed in a community.
Open Source	Open Source Software is distributed with its source code attached and can be edited and redistributed as long as you credit the original author.
Off-The-Shelf	Designed to be used by as many customers as possible, is premade and built to appeal to as many as possible. Tends to be relatively cheap.
Custom Written	Specially written and created for a specific reason, It is built to the need and specification of the company who will be using it.
Automatic Updates	Automatically searches software companies servers for updates to programs and downloads and installs where required.
System Defragmentation	Cleans the hard drive and moves data closer to each other to save storage space and speed up the computer.
Firewall	Stops unwanted and dangerous data packets entering and leaving computer systems.
Anti-Virus	Periodically scans computer systems for Virus's and Malware and if necessary Quarantines them to stop them causing a hazard.

Resource summary

	Created by Daniel Hassell about 7 years ago