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NudgeMug is a lightweight utility application developed by hrt0x for the Microsoft Windows operating system, falling into the category of system tray utilities and keep-awake tools. Its purpose is to prevent a Windows computer from going idle, sleeping, or turning off its display during finite, user-defined periods of activity, which makes it relevant for situations where a machine must remain responsive without constant interaction from its operator. Typical use cases include keeping a system awake while monitoring long-running processes, downloads, or renders; maintaining an active status during presentations, screen sharing, or video calls where the user is not physically touching the mouse or keyboard; and avoiding unwanted screen locking or sleep transitions during reading or observation tasks. The application runs as a tiny tray app, meaning it resides in the Windows system tray rather than occupying a full window, keeping it unobtrusive while it performs its function. NudgeMug offers two distinct approaches to keeping the system awake. The first method relies on polite, visible mouse nudges combined with a harmless F15 key signal, simulating small amounts of user input so that Windows registers ongoing activity. The F15 key is notable because it is not present on most standard keyboards, allowing the simulated keystroke to register as input without interfering with normal typing or application shortcuts. The second method is a quieter caffeine mode, which keeps both the system and the display awake without generating any simulated user input at all, suiting scenarios where even small mouse movements would be disruptive or undesirable. The software is currently available in version 1.0.1, which is the only version released to date, indicating a young project with a single published release in its version history. As a compact and focused utility, NudgeMug serves users who need temporary, controlled wakefulness on Windows machines without resorting to changing system-wide power settings.
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