This could be worth looking at for those of your with multiple Unity installations. It is still in development, and they seem quite open to feedback via their own forum.
If nothing else, at least the short-cuts to launch feel a bit more professional than a folder full of icons.
Project view;
Launch the correct version of Unity for your project, or, select a different version;
See also;
- Unity Hub : Windows | Mac
- Unity - Blog : Steamline your workflow - Introducing Unity Hub beta
- Unity - Forum : Unity Hub Preview