Crudzilla Web Application Builder is a browser based web development product with an innovative middle-ware that will make the competition look primitive.
It runs on the jvm so you are not limited by environment. You can run it on your laptop, company server or even on a cloud service like AWS.
Source included so you can modify it to fit your need.
Modern, Simple and Professional. I have used it to build a number of apps, it is the most productive dev tool I have used.