HiveMind is a browser based web development that combines an application container (jetty), a middleware and a developer environment that runs in the browser.
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 include so it is easy to hack so you can modify it for your own 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.