Downloadable computer software, namely, proprietary implementation of software stack and application programming interface (API); downloadable computer software, namely, propriety implementation of collection of independent software components that work together to support the execution of an application; downloadable computer program, namely, downloadable program for creating and managing a software stack and application program interface (API); downloadable computer software for creating and managing software stack and application programming interface (API); computer hardware integrated with downloadable software for creating and managing a software stack and application program interface (API); downloadable computer software for use in automating the creation, distribution and execution of computer program applications; downloadable computer software for use in designing, developing and deploying other computer software; downloadable computer software utilities that facilitate writing other programs; downloadable computer software for monitoring and testing other computer software; downloadable computer software for use in designing, developing and deploying other computer software; downloadable computer software utilities that facilitate writing other programs; downloadable computer software for testing other computer software