1. Windows 7
1.1. Pros:
1.1.1. 1
1.1.1.1. The largest library of programs and applications.
1.1.2. 2
1.1.2.1. Most widely used.
1.2. Cons:
1.2.1. 1
1.2.1.1. Prone to viruses, spyware, and adware.
1.2.2. 2
1.2.2.1. Purchasing a Windows license/install disk can be relatively expensive.
2. Mac OS X
2.1. Pros:
2.1.1. 1
2.1.1.1. Relatively simple and intuitive interface with many advanced features.
2.1.2. 2
2.1.2.1. Reliable and high performance.
2.2. Cons:
2.2.1. 1
2.2.1.1. Limited to Apple-manufactured hardware.
2.2.2. 2
2.2.2.1. Smaller library of applications in comparison to Windows.
3. Google Chrome OS
3.1. Pros:
3.1.1. 1
3.1.1.1. Speed: Currently, boots up at around seven seconds. Google is trying to make it faster.
3.1.2. 2
3.1.2.1. Low system requirements: With all work being carried out on the web, the hardware requirements are not likely to be very high.
3.2. Cons:
3.2.1. 1
3.2.1.1. Applications: Web applications are generally poor cousins of their desktop counterparts.
3.2.2. 2
3.2.2.1. Multimedia: It is unlikely to handle heavy-duty video and audio the way Windows and Macs do.
4. Ubuntu
4.1. Pros:
4.1.1. 1
4.1.1.1. Usually free.
4.1.2. 2
4.1.2.1. More easily customizable.
4.2. Cons:
4.2.1. 1
4.2.1.1. Many commercial programs do not support Linux.
4.2.2. 2
4.2.2.1. Small commercial game library.
4.3. Ubuntu is a computer operating system based on the Debian GNU/Linux distribution and is distributed as free and open source software with additional proprietary software available. It is named after the Southern African ethical principle Ubuntu ("humanity towards others"). Ubuntu provides an up-to-date, stable operating system for the average user, with a strong focus on usability and ease of installation. Web statistics suggest that Ubuntu's share of Linux desktop usage is about 50%, and upward trending usage as a web server. Ubuntu is sponsored by the UK-based company Canonical Ltd.
4.4. http://gogeometry.com/software/ubuntu_linux_operating_system_mind_map_news.html
5. Alin Nagy Operating Systems
5.1. Operating System Definition
5.1.1. is software, consisting of programs and data, that runs on computers, manages computer hardware resources[1], and provides common services for execution of various application software.
5.2. Phone Operating Systems
5.2.1. iOS
5.2.1.1. Pros:
5.2.1.1.1. 1
5.2.1.1.2. 2
5.2.1.2. Cons:
5.2.1.2.1. 1
5.2.1.2.2. 2
5.2.2. Symbian
5.2.3. Android
5.2.3.1. Pros:
5.2.3.1.1. 1
5.2.3.1.2. 2
5.2.3.2. Cons:
5.2.3.2.1. 1
5.2.3.2.2. 2
5.2.4. RIM
5.3. Sources 2011
5.3.1. http://www.rvpradeep.co.cc/2010/09/google-chrome-os-pros-and-cons.html
5.3.2. http://en.wikipedia.org/wiki/Operating_systems
5.3.3. http://www.iphonedownloadblog.com/2010/06/21/pros-cons-ios-4/