Custom software can be as big or as small as per the need of a company. Custom software is specially designed with a single customer in mind and it can perfectly cater to customer’s personal preferences. Customer feedback is taken during the development process. The top industries that utilize custom software are the IT and banking industries. Usually the large companies use custom software for their critical functions like customer management, content management, inventory management, human resource management, or to fill any gaps which may be present in the existing software packages.