Apple Mac OS x and Microsoft windows are two of the world’s most widely used desktop operating system. apples Mac OS x is more commonly knows as just simply OS x and is derived from BSD variant OS it is known being customised and developed by apple computers for their own line of the PCs often referred as Macs

Windows is developed by Microsoft for any PC including apple. Os x windows both have long line of release in their history. The x in OS stands for 10 signifying the 10 the major release of the Macs OS within the Mac OS line up there have been incremented sub versions named after felines

Windows began with 1.0 following the numeric system called as till,3.1,after that version NT,nt4 and windows 2000for the enterprise and windows 95 98 etc both lines merged again starting from desktop version windows xp followed by windows vista,7 and now the latest windows 8 has just been released

According to one source windows has a market share of 92.8% compared to Mac OS x is 5.3%

the software used by both these OS are

1. Web browser:- windows uses Internet explorer and apple uses safari

2. Scripting software used:-windows uses power shell and apple uses apple script

 3. Media players used:-windows uses media player or media centre and apple uses iTunes or Quick Time player

Viruses:-

Windows large market share has made it a target for hackers creating virus and other malicious software. Some counts place the number windows/ms dos virus at over 50000.it is critical that windows user diligent run anti virus program and keep them up to date

                                                 

Infection of Macs running OS x is extremely rare and there has never been a large scale infections of computers running Mac OS x it is said that Mac OS doest have even the firewall because the virus in Mac OS is rare

advantages o f apple

1) Security:-apple computers are much more secured then that of windows PCs viruses and malware designed for windows based will not run on Mac OS

2)reliability:-the people who make Mac software’s are the same persons who make Mac hardware while windows programmers have to take into mealy infinite variations  in hardware these Mac OS are deigned to only for limited computer which is only designed by apple by this we can say that the system is much more stable the widows

3) Advanced tech:-The current generation of mack book has pro features like led monitors ,multi touch mouse track pads etc .Macs desktop features up to 8 core processor and up to 4 terabyte storage that’s up to 4000gbs

Disadvantages of Mac and advantages of windows Os

1) Macs cannot be upgraded that is customised:-there are upgraded options when we buy Macs but unlike windows we cannot mix and match the compo nets.try and upgrade Mac OS ,it’s better to buy and new Mac

Price:-Macs are very expensive . Even the very cheapest laptop cost you about 1400$ that is about  78000rs in India rupees but windows machine just cost you about 500$ that is 28000rs in India currency

2) playing games requires windows:-there are every few games available for Macs if you are a gamer the Mac is not a best choice for you, you can run it in Mac but you have to run windows

Android

Android is a Linux-based operating system for mobile devices such as smart phones and tablet computers. It is developed by the Open Handset Alliance, led by Google. Google financially backed the initial developer of the software, Android Inc., and later purchased it in 2005Google releases the Android code as open-source, under the Apache License. The Android Open Source Project (AOSP) is tasked with the maintenance and further development of Android has a large community of developers writing applications ("apps") that extend the functionality of the devices. Developers write primarily in a customized version of Java. Apps can be downloaded from third-party sites or through online stores such as Google Play (formerly Android Market), the app store run by Google. In June 2012, there were more than 600,000 apps available for Android, and the estimated number of applications downloaded from Google Play was 20 billion.[

Android became the world’s leading Smartphone platform at the end of 2010.For the first quarter of 2012, Android had a 59% Smartphone market share worldwide.At the half of 2012, there were 400 million devices activated and 1 million activations per day. Android has been updated frequently since the original release of "Astro", with each fixing bugs and adding new features. Each version is named in alphabetical order, with 1.5 "Cupcake" being the first named after a dessert and every update since following this naming convention.

List of Android version names:

Cupcake

Donut

Éclair

Froyo

Gingerbread

Honeycomb

Ice Cream Sandwich

Jelly Bean

Applications are usually developed in the Java language using the Android Software Development Kit, but other development tools are available, including a Native Development Kit for applications or extensions in C or C+ Android applications run in a sandbox, an isolated area of the operating system that does not have access to the rest of the system's resources, unless access permissions are granted by the user when the application is installed. Before installing an application, the Play Store displays all required permissions. A game may need to enable vibration, for example, but should not need to read messages or access the phonebook. After reviewing these permissions, the user can decide whether to install the application.The sandboxing and permissions system weakens the impact of vulnerabilities and bugs in applications, but developer confusion and limited documentation has resulted in applications routinely requesting unnecessary permissions, reducing its effectiveness. The complexity of inter-application communication implies Android may have opportunities to run unauthorized code.

Several security firms have released antivirus software for Android devices, in particular, Lookout Mobile Security, AVG Technologies,Avast F-Secure, Kaspersky

Android smartphones have the ability to report the location of Wi-Fi access points, encountered as phone users move around, to build databases containing the physical locations of hundreds of millions of such access points. These databases form electronic maps to locate smartphones, allowing them to run apps like Foursquare, Latitude, Places, and to deliver location-based ads.

Third party monitoring software such as TaintDroid,an academic research-funded project, can, in some cases, detect when personal information is being sent from applications to remote servers.

In March 2012 it was revealed that Android Apps can copy photos without explicit user permission, Google responded they "originally designed the Android photos file system similar to those of other computing platforms like Windows and Mac OS. [...] we're taking another look at this and considering adding a permission for apps to access images. We've always had policies in place to remove any apps [on Google Play] that improperly access your data."