Apps similar to Chameleon Window Manager include Rectangle, which is open source with a free version. Other options are BetterTouchTool, SnapZones, AquaSnap and SmartSystemMenu. Window Managers like Chameleon Window Manager are a crowded field, with more than 50 alternatives for Windows, Mac, Linux and Android.
Penc is a window manager app for macOS designed for use with the trackpad. It lets you use trackpad gestures along with the Command key to move, resize and snap windows to the screen.
Ever try to size a window so it just touches the edge of the screen? It’s tedious (at least for me). FreeSnap allows you to instantly resize any window edge to the corresponding screen edge. Want that window to touch the right edge of the screen?
United States
TrayIt! - minimize to the system icon tray any program (Outlook Express, Notepad, Word, Internet Explorer, Sunbird, Thunderbird, Opera, OpenOffice etc.) and get more room in the Taskbar!
SizeUp allows you to quickly position a window to fill exactly half the screen (splitscreen), a quarter of the screen (quadrant), full screen, or centered via the menu bar or configurable system-wide shortcuts (hotkeys).
United States
Windownaut is versatile window management app that let's you define keyboard shortcuts and active areas on your screen to resize an position the windows on your desktop.
WinLayout is a program with keyboard hotkeys to move, resize, and snap windows all around the desktop area.
Easy Move+Resize is based on behavior found in many X11/Linux window managers, adding easy modifier key + mouse drag move and resize to OS X.
Arrange your application windows using nothing but drag and drop! There are no hot-keys to remember or menus to click, just drag and drop a window onto Layout Icon and it will instantly snap to that layout.
United Kingdom
Moo0 WindowMenuPlus lets you have extra useful menus in every windows "system window menu". Its the menu that you can access through right-clicking on any windows title bar or taskbar button. This tool can add extra menus there such as "Keep on Top"...
