Borderless Fullscreen Window

A lightweight Linux X11 alternative to Borderless Gaming for converting
windowed applications and games into borderless fullscreen windows.
Disclaimer: This project is an independent open-source tool and is not
affiliated with, sponsored by, or endorsed by Codeusa Software.

FEATURES
- Live X11 Window & RandR Monitor Picker: enumerate active X11/XWayland
windows with WMCLASS, title, PID, and geometry alongside RandR monitor
targets, or pick any window directly with an interactive crosshair cursor.
- True Borderless Fullscreen & Safe Restore: clears window decorations via
MOTIFWMHINTS, strips maximize constraints, resizes cleanly to the
target monitor bounds with optional Always-on-Top, and restores the exact
saved decorations and original geometry on demand.
- Persistent Auto-Watch Rules: save WM_CLASS matching rules in SQLite/JSON
so a background timer automatically converts newly launched windows into
borderless fullscreen on your chosen display.
- Wayland Awareness & Diagnostic Backup Log: displays session diagnostics,
saved window backup states, and one-click Restore All safety controls.
- Bilingual UI: English default with instant Vietnamese toggle.

SUPPORT & DONATE
- Created by Thanh Nguyen — https://buymeacoffee.com/thanhnv128b