Aquasnap is a powerful window manager that helps you arrange and organize multiple applications on your desktop with minimum effort. It allows you to achieve maximum multitasking, especially if you own a high-resolution monitor or a multi-monitor setup.
WindowGrid is a modern window management program that allows the user to quickly and easily layout their windows on a dynamic grid.
No updates since 2016, bug reports on maintainers' BitBucket page go unresponded to. https://bitbucket.org/joshua_wilding/windowgrid-binaries/issues?status=new&status=open
BetterTouchTool is a great, feature packed app that allows you to configure many gestures for your Magic Mouse (1 & 2), Macbook Trackpad and Magic Trackpad (1 & 2) and also Mouse Gestures for normal mice.
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.
Divvy is an entirely new way of managing your workspace. It allows you to quickly and efficiently "divvy up" your screen into exact portions.Discontinued
The project seems no longer developed. Last version, 1.5.2, released in August 2019, can be still downloaded and bought from the official website and from the Appstore.
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