Android is a revolutionary mobile operating system that currently has 43.4% of the global market share. What makes this OS favorite amongst buyers is the freedom it gives to play with the phone by installing apps from Android Market. There are interesting tools & apps coming everyday from Google employees & individual developers for the Android Market. Weeding through various apps present in the Android Market, we have prepared a list of must-have 15 free apps that will perfectly fit into your work & entertainment lifestyle.