Computer consultation; computer services, namely, designing and implementing network web pages for others; computer services, namely, designing and implementing web sites for others; computer software design for others; consultancy in the field of software design; design and development of computer hardware and software; design and development of on-line computer software systems; design and maintenance of computer sites for third parties; design of homepages and websites; design, development and implementation of software; designing and developing webpages on the Internet; providing on-line non-downloadable software for managing the content of web sites and mobile devices