Today in this busy world open source customization is more effective way than others. Open source framework made by some open community and it is either free or it is available in very low cost where you have to agreed a few license. It is very good to use beacuse you don’t have to spend much time on this. It also reduce total cost of the project. Clients are alco happy with this.
Open source application like Joomla customization, Drupal CMS customization, Mambo, WordPress, X-cart customization, Magneto, Zen-cart cutomization are very easy to install and use. As it contains own framework so you can put your idea and coustomer’s proper need on the project. Now many companies are using this. A big area of development is depending on this. Developers can easily able to give their personal feel with the help of open source.