Activity Monitor

Winsage
August 13, 2026
Dave W. Plummer, a notable figure in programming, contributed significantly to Microsoft by introducing ZIP file support for Windows, adapting Space Cadet Pinball for Windows NT, and creating the Windows Task Manager, which debuted in 1996. He has shared insights from his time at Microsoft through his platform, Dave's Garage. Recently, he released a mockup of a redesigned Task Manager, named "Task Manager OG" (TMOG), which features a cyberpunk aesthetic and is currently available as a beta version for macOS, with a Windows version planned. TMOG combines elements of macOS's Activity Monitor and Windows Task Manager, providing essential system information and deeper diagnostics. The application is described as being half the size of the Windows Task Manager and is available for free download.
Winsage
August 4, 2026
David W. Plummer, the creator of the original Windows Task Manager, is developing a new tool called Task Manager OG (TMOG) for macOS, aimed at providing a comprehensive system console for users of graphical user interface-based operating systems. TMOG will feature detailed insights into processor frequency, thermal values, resource allocation metrics, in-depth analysis of CPU core activity, and process branching visualization. The macOS version is being developed using Swift and AppKit, while the Windows version will be a pure Win32 application optimized for x86-64 architecture. A beta version for macOS is currently available, with a Windows beta expected soon. TMOG will be free, with a potential "Pro" version planned for additional features. Plummer's previous company, SoftwareOnline, faced legal issues after he left Microsoft, resulting in a settlement that included 0,000 in civil penalties and ,000 in legal fees.
Winsage
August 2, 2026
Dave W. Plummer, the original developer of the Windows Task Manager, has launched a beta project called Task Manager OG (TMOG) as an alternative to macOS's Activity Monitor. TMOG is built from scratch using Swift and does not contain any code from Windows XP. Microsoft provided Plummer with the source code of the XP Task Manager, but TMOG is independent. Initially intended for distribution through the Mac App Store, TMOG will instead be available for direct download due to Apple's sandboxing restrictions and guidelines against terminating other applications. Plummer plans to develop a Windows version and potentially a Pro version in the future.
Winsage
July 30, 2026
Dave W. Plummer, a former Microsoft developer and creator of Windows Task Manager, is developing a version of Task Manager for Apple Mac computers, critiquing the existing Activity Monitor. The new Mac Task Manager, which is in beta testing, aims to include features like task priorities and startup management, and will be available for free on the App Store. Plummer confirmed that Microsoft provided him with the source code for XP Task Manager, but the new project is developed in Swift without using any original Microsoft code.
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