42 Software authoring; Software design and development; Software development in the framework of software publishing; Software engineering services; Application service provider featuring application programming interface (API) software; Computer software consultancy; Computer software consulting; Computer software design, computer programming, and maintenance of computer software; Computer software development; Computer software development in the field of mobile applications; Computer software development, computer programming and maintenance of computer software for personal data management; Customizing computer software; Design and development of computer hardware and software; Design and development of on-line computer software systems; Design of home pages, computer software and web sites; Design, development, and implementation of software for a peer to peer network; Design, maintenance, development and updating of computer software; Developing computer software; Development, updating and maintenance of software and database systems; Installation, maintenance and repair of software for computer systems; Installation, maintenance and repair of cell phone related software; Maintenance of computer software; Research, development, design and upgrading of computer software; Smartphone software design; Testing of computer software; Updating of computer software; Upgrading of computer software; Writing and updating computer software