IceWM

Activated by dragging, customizable keyboard shortcuts or via menu bar, Magnet declutters your screen by snapping windows into organized tiles. Having multiple windows aligned neatly side by side eliminates app switching and greatly enhances multitasking. Fullscreen, halves, quarters & thirds. Up to six external displays are supported. The potential combinations are endless. Drag windows to the corners and Magnet snaps them into quarters. Use side edges to arrange horizontal and vertical halves. Dragging to the top edge maximizes window size on a given screen. Bottom edge creates thirds. Slide on it to expand into two-thirds. Quarters and halves reside in the corners and on the bottom edge.

WindowManager helps you to improve your workflow by remembering and restoring the position and size of your programs and windows. Many programs don't remember their position and size between sessions and even Windows Explorer does not restore Windows to their last position under Windows 7 or higher. This is where WindowManager steps in and makes sure your windows are placed exactly where you want them every time you open them. WindowManager even allows you to lock the position and size of any window, so that it will always open at the same spot no matter where you move it. The window handling is fully customizable and you can set up special rules for your favorite or most frequently used windows. You can also make WindowManager send keystrokes or mouse clicks to a program when its window is opened, run additional programs, and other advanced actions. With WindowManager, you can also minimize most windows in the system tray.