1. Windows 7
1.1. Pros:
1.1.1. 1. Instillation is quick
1.1.2. 2. After working with wizard screens, the install is automatic
1.2. Cons:
1.2.1. 1. Control panel has no "classic view"
1.2.2. 2. includes support for digital rights management technologies that could potentially regulate how you use your media.
2. Ubuntu 10.10
2.1. Pros:
2.1.1. 1: Can easily install as a dual boot or even inside Windows using the Wubi installer
2.1.2. 2. Option to “try before you install” using the Live CD feature
2.2. Cons:
2.2.1. 1: you do have to mess about with .ISO files and burn a disc.
2.2.2. 2. Proprietary Software, this means it is not a free or open sourse
3. Operating System Definition : software that controls the execution of computer programs and may provide various services
4. Explorer 9
4.1. Pros:
4.1.1. 1: Faster multicore JavaScript engine
4.1.2. 2. Very well integrated with the system
4.2. Cons:
4.2.1. 1: Basic HTML5 support
4.2.2. 2. Not fast as opera browser
5. Mac OS X
5.1. Pros:
5.1.1. 1. The software and hardware are designed to work together for optimal experience
5.1.2. 2. Programs are not married to one another, so if one locks up the whole computer doesn't lock up and the program can be restarted
5.2. Cons:
5.2.1. 1. Not as easy to upgrade, though more companies are starting to offer upgrade options
5.2.2. 2. The EULA agreement states that you are not allowed to install its OS on any PC. So no dual booting allowed on another non Mac system,
6. Chromium OS
6.1. Pros:
6.1.1. 1. Sandboxed tabs and Sandboxed extensions
6.1.2. 2. Coding for Chrome means that the site will work for iPhone and Android phones and safari
6.2. Cons:
6.2.1. 1. Doesn’t have firebug, pixel perfect or developer toolbar extension
6.2.2. 2. Limited right click menu, no “copy email address”, no “properties for images" and more
7. Opera 10.63
7.1. Pros:
7.1.1. 1. The download and program size is much smaller than IE, and it offers multiple ways to improve the speed.
7.1.2. 2. Virus and hacking threats and techniques that are made to attack personal computers are targeted towards the most used browser: Internet Explorer. Since Opera is lesser known, it is safe from the majority of attacks.
7.2. Cons:
7.2.1. 1. Opera is a separate company, so downloading is necessary. For slow connections, downloading this program could be difficult and you may have problems getting it downloaded.
7.2.2. 2. IE is integrated with the operating system. It's already installed on the computer, so your computer will download the latest version, patches, and any other related tool for you, providing you use automatic updates.