I have a 57" Neo G9 (7680×2160). Maximizing anything, or playing a game in borderless fullscreen, stretches it across the whole panel, which is awful. Shrinking the Windows work area messes up the taskbar, and FancyZones doesn't keep borderless-fullscreen games in a zone. So I built DisplayWeave.
What it does
You draw up to 9 regions on your monitor with a ruler-style editor, e.g. 1980 | 3720 | 1980.
When you maximize a window or a game goes borderless fullscreen, DisplayWeave automatically fits it into the region it's in.
Your desktop and taskbar stay normal size. Nothing is loaded into the app; it only moves the window from outside.
Per-app rules for the exceptions, when an app doesn't behave with the automatic fit:
Borderless in region, for games that resize themselves back to the full screen.
Centered fullscreen, which uses your GPU's centered scaling for exclusive-fullscreen games in the middle region.
Ignore, for apps it should never touch.
An opt-in Force fullscreen for apps that need it.
Layout profiles, remembers which region each app was last in, and you can hold Shift while maximizing to skip it once.
Why it might be useful to you: if you have a 32:9 or 49"/57" panel and want a 16:9 game in the middle with Discord or a browser on the sides, without black-bar hacks or changing your resolution.
Honest caveats
Windows 10/11 x64 only.
Exclusive fullscreen is never confined (that's what the Centered option is for).
Force fullscreen loads a component into the app, so anti-cheat may flag it. Don't use it on multiplayer games. Everything else stays outside the app.
Apps that aren't DPI-aware come out the wrong size when Windows scaling is above 100%.
It's an early 1.x, so expect rough edges with some games.
Free and open source (MIT), and code-signed. The installer needs no admin rights, and updates are signed and checked before they install:
https://github.com/alexchaoss/DisplayWeave
Feedback and bug reports are welcome. There's a "diagnostic report" button that strips your paths and usernames before you post one.