They used to be poor imitations of their desktop counterparts, with only one or two functions and not at all practical. But my, have these apps grown. Today’s SaaS business and CRM apps have become so powerful and useful that in many cases, they’ve begun to replace traditional desktop software such as Microsoft Dynamics, Sage, SAP, etc. Desktop apps are great and all, but they don’t provide the same benefits as business apps that make use of cloud computing. Online converter. Free Internet Tools. iTools.