Spacewalk is a Linux and Solaris systems management solution. It allows you to inventory your systems (hardware and software information), install and update software on your systems, collect and distribute your custom software packages into manageable groups, provision (Kickstart) your systems, manage and deploy configuration files to your systems, monitor your systems, provision virtual guests, and start/stop/configure virtual guests.
Rally is a software component with a user interface which allows a user to install, update, and remove packages on RPM based operating systems. Primary functions (downloading software packages from network repositories and their installation) may be performed in parallel. The user interface is split into two independent parts: a graphical one and a command line utility. The graphical interface contains package searching and category browsing functions. Rally assumes the Fedora project as a reference platform.