Skipper

At first, I was unable to understand what this tool is for, but after a little research, I come to know it is a vital tool for the programmers. It comes into use while programmers are working on some object-oriented programming (OOP).

ORM:

Object-relational mapping (ORM, O/RM, and O/R mapping tool) in computer science is a programming technique for converting data between incompatible type systems using object-oriented programming languages
Wikipedia

Features:

• Import export projects easily
• Works with multiple ORM Frameworks
• Schema can be visualised through Entity–relationship model
• Editible objects

The most useful I liked about this tool is, it claims there won't be any syntax errors.

Smart wizards, value completors, validators and assistants help you create 100% valid definition files. Now you can stop
remembering the whole ORM syntax and keywords.
Source