The Cloud Computing/SaaS/PaaS space is loaded with interesting vendors, and the space is booming. We have assembled a visual map of the industry, showing how the major players fit into the overall space: cloud computing, SaaS, PaaS, core cloud services.
Rails has always bred controversy. Developers have argued that it is fundamentally flawed and unscalable; others have argued back saying the opposite. The creator of the popular Rails web server Mongrel abandoned rails and trashed the community.