Providing temporary use of on-line non-downloadable computer software for payment processing, tracking, and invoicing; Providing temporary use of on-line non-downloadable authentication software for controlling access to and communications with computers and computer networks; Providing an online website for creating and hosting micro websites for businesses; Computer services, namely, application service provider featuring application programming interfaces (APIs) software that allows users to consolidate and manage payment processing, tracking, and invoicing for the users' own customers, as well as for the users themselves; Providing computer programming services to customers for the creation of payment and donation options on the customer website; Providing computer programming services to customers to facilitate sales through customer websites, namely, by providing online invoicing, on-site checkout buttons, virtual terminal, and application programming interfaces (APIs)