Borderless Window Manager
Run any game windowed or borderless full screen on the monitor you want, even when the game has no option for it. Force it into a real window, or tab games and apps together. Click a second monitor; the game stays put. Rules and layouts on a hotkey. Runs on both Windows and SteamOS/Linux.
- Release date
- October 7, 2026
- Platforms
- Windows, Linux
- Developer
- Marduk Syndicate
- Publisher
- Marduk Syndicate

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About Borderless Window Manager
Any game, any monitorBorderless Window Manager makes games behave on your desktop. Run any game windowed or borderless full screen on the monitor you want, even when the game has no option for it. Put a game that has no windowed mode into a real window of its own, or make games and apps the tabs of one window. Click your second monitor without the game minimizing. Put every window where it belongs, remember it, and switch whole monitor layouts with a key.
It never asks for administrator and never touches a game's code. One keyPress Ctrl+Alt+B while a game is in front and it goes borderless: the title bar and frame disappear, the picture fills the monitor, and alt-tab is instant. Press it in a game that was never designed for it. Undo it any time from History. Borderless, your way"Fill the monitor" is only the default. Half an ultra wide. Borderless into the left or right half, with a black backdrop behind so the desktop never shows through.
The game's own aspect ratio. A 4:3 or 16:10 game stays that shape, centered, with clean black bars. Any monitor. The one you are on, the one you launched from, or the one you name. Click your second monitor without the game minimizingA borderless window is still a window.…
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