No specific info about version 3.1. Please visit the main page of HandyThing on Software Informer.
With this app you can organize the simultaneously opened windows.
Synchronize your data between your mobile phone and PC
Divvy is a program that enables you to manage your workspace.
It allows you to organize your applications on up to four virtual desktops.
Tri-Desk-A-Top is a virtual desktop manager developed with Microsoft C#.NET.
Window Sizer is a perfect application for adjusting screen resolution.