Many reports are simply built on a SQL query, that mostly can be restricted via select options. A report puts the result usually into an ABAP list, ALV list or ALV grid. The core of the report is the query itself, the rest is always the same boring and repetitive work: definition of types, declaration of variables and internal tables, displaying the output. Putting this together takes at least a few hours, or even one or two days. Now there a new tool that can amazingly accelerate the implementation of reports: you only have to write the query, and the program will generate the complete ABAP source code of the report! This can reduce the development time to a few minutes.
The Hovitaga Report Generator is built on top of the Hovitaga OpenSQL Editor so they have basically the same UI: