Solution: Software refers to a collection of programs. OSS stands for Open Source Software. It can be freely accessed, edited and modified according to our needs.

Solution: The statement is true. The definition of open source guarantees the use of open source software for commercial purposes. It is commercial but not proprietary.

Solution: PNG is an image format. It stands for portable network graphics. PNG supports palette based images.

Solution: OSI is open source initiative. It is a leading authority on OSS. OSS is a computer software distributed along with its source code.

Solution: MS-office is not open source software since its source code isn’t shared publicly. Others like Libre office, MySQL are open source softwares through which is distributed along with its source code.

Solution: The users must agree to the license terms and agreement in order to access an open source software. There is a limitation of OSS that the users cannot modify the terms and conditions of any software.

Solution: An OSS is nothing but an open source software. It has restricted choices, i.e., there are fewer choices available for open source. Also, speed of change is an important downside, since the software keeps on updating itself, we cannot ensure if it is compatible with other applications.

Solution: Nvu is an example of an open source software for web designing. Others like KOffice, Open Office and AbiWorld are OSS examples for Office Automation.

Solution: GIMPshop is an image editor similar to adobe photoshop. Nvu is intended for those with no technical expertise.

Solution: Pidgin is used for Free Instant Messaging(IIM) client. Virtue mart and emart are for e-commerce purpose. Drupal is for content management.