BOINC is described as '(Berkeley Open Infrastructure for Network Computing) is a software platform for volunteer computing and desktop grid and volunteer computing' and is a popular Cloud Computing Service in the Education & Reference category. There are more than 10 alternatives to BOINC for a variety of platforms, including Windows, Linux, Online / Web-based, Mac and Self-Hosted solutions. The best alternative is Folding@home, which is free. Other great apps like BOINC are Charity Engine (Free, Open Source), GridRepublic (Free, Open Source), JPPF (Free, Open Source) and Quantum Moves (Free).
PelicanHPC is a Debian-based live CD image with a goal to make it simple to set up a high performance computing cluster. The front-end node (either a real computer or a virtual machine) boots from the CD image.
PiCloud gives every scientist, developer, and engineer a supercomputer at their fingertips. We make it easy to leverage thousands of cores of computational power for high performance computing, batch processing, and scientific computing applications.