Platform as a service (PAAS) featuring computer software platforms for software development services, internal IT support services, and IT consulting services that utilize resource-driven planning tools with the focus on resource allocation, actual-to-budget tracking, and optimization; Providing a website featuring on-line non-downloadable software that enables users to manage resource-driven planning and budgeting specifically for software developments or enterprise resource planning project implementations; Providing subscription-based temporary use of on-line non-downloadable software for resource-driven planning and budgeting in software development projects