OpenStack Compute (Nova)

Neutron is an OpenStack project to provide "network connectivity as a service" between interface devices (e.g., vNICs) managed by other OpenStack services

OpenStack Keystone provides authentication, authorization and service discovery mechanisms via HTTP primarily for use by projects in the OpenStack family

Horizon is a Django-based project aimed at providing a complete OpenStack Dashboard along with an extensible framework for building new dashboards from reusable components.

Glance is an OpenStack project that provides services and associated libraries to store, browse, share, distribute and manage bootable disk images, other data closely associated with initializing compute resources, and metadata definitions.

OpenStack Placement provides an HTTP service for managing, selecting, and claiming providers of classes of inventory representing available resources in a cloud.