PiCloud is described as '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' and is a Cloud Computing service in the business & commerce category. There are more than 10 alternatives to PiCloud, not only websites but also apps for a variety of platforms, including Linux, Mac, Windows and Android apps. The best PiCloud alternative is BOINC, which is both free and Open Source. Other great sites and apps similar to PiCloud are Apache Mesos, Charity Engine, Folding@home and Foldit.
DIET is a software for grid-computing. As middleware, DIET sits between the operating system (which handles the details of the hardware) and the application software (which deals with the specific computational task at hand).
DIET is the most popular Self-Hosted alternative to PiCloud.
