Burst Super-Res
Stack several shots of a still scene into one cleaner photo at double size
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If you have spare monitors beside your main one, it turns them into an ambient backlight for films and games, free and with no hardware.
Overscan samples the edges of your main screen and spreads those colours as a soft glow across the monitors next to it, so a video seems to carry on past its frame. You drag boxes to match your desk layout and real gaps; it hides side taskbars while running and pauses from the tray. Free for Windows 10 and 11 (x64, DirectX 11), installer or portable, no account or tracking. Three screens give the full effect; one screen glows around windowed video only.
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