Computer software design for others, computer programming for others, maintenance of computer software for others, rental or leasing of computer software, renting or leasing computer facilities via the internet; providing on-line computer databases; providing temporary use of on-line, non-downloadable software; providing integrated computer software of third parties via the internet; all of the aforesaid services to be rendered in the field of business-to-business e-commerce, or for use in the construction of XML application platform