VMware provides cloud and virtualization software and services. The company's desktop software runs on Microsoft Windows, Linux, and Mac OS X, while its enterprise software for servers, VMware ESX and VMware ESXi, are bare-metal hypervisors that run directly on server hardware without requiring an additional underlying operating system.
Docker is an open-source project that automates the deployment of Linux applications inside software containers. Docker containers wrap up a piece of software in a complete filesystem that contains everything it needs to run: code, runtime, system tools, system libraries – anything you can install on a server. This guarantees that it will always run the same, regardless of the environment it is running in.
Splunk captures, indexes and correlates real-time data in a searchable repository from which it can generate graphs, reports, alerts, dashboards and visualizations. The product has a mission of making machine data accessible across an organization by identifying data patterns, providing metrics, diagnosing problems and providing intelligence for business operations.