AltDrag allows you to move and resize windows much easier. When you have it running you can simply hold down the Alt key and then use your mouse to drag any window, and it doesn't matter where in the window you click.
altdrag vs HyperDock opinions
Different Functionality. Hyperdock is for Mac, altdrag for Windows.
ShiftIt is an application for OSX that allows you to quickly manipulate window position and size using keyboard shortcuts. It intends to become a full featured window organizer for OSX. It is a complete rewrite of the original ShiftIt by Aravindkumar Rajendiran which is not...Discontinued
This project is looking for a new maintainer. Until that transition is completed, there will likely not be further development on this project.from https://github.com/fikovnik/ShiftIt/blob/master/README.md
KDE Mover-Sizer is a lightweight program enabling KDE-style alt-click moving and resizing for Windows XP, 7, 2000, 2003, Windows Server, and Vista.
A lightweight utility for allowing you to quickly snap windows to a tiling grid under your existing Linux window manager. Can be triggered via keyboard shortcuts, the command line, or D-Bus calls.
The company Sephware announced in March 2019 that Autumn was made open source. Now the project is on GitHub, but it seems abandoned. Last version, 1.0.7, released on March 27, 2019, can be still downloaded from GitHub