groups of projects in intellij idea

Question

For now, at least since IntelliJ Idea 14+, ide remembers the last set of opened projects. Could we control it comfortably and have switchable sets (groups) of projects? This is another way of opening projects, not like Modules. My hope is some plugin already do the functionality, but which one?

Answer 1

As of 2017-08, IntelliJ Idea 2017.2.1 can group projects.

To use the feature, in the project selection window, right-click on the project name:

I've created a group called 'kata', that contains 'camel-snake-pascal-kebab', 'strikeitrich', 'gildedrose'.

With the groups closed:

with an open group: