it becomes increasingly famous to collaborate at house. People enjoy to stay at bed longer and do their jobs when they want and not when they are required to do them. It is a large ease, specially for freelancers who enjoy to collaborate on their own and dislike bosses and sitting at the table from 9 to 5 every day. It is also a perfect job for people who would like to posses part-time work. The advantageous are plenty as well as disadvantageous. Increasingly the individuals also collaborate in groups with other freelancers. They can work together using Internet and time tracking software.