TMOG, a native system monitor branded Task Manager OG, is now available for Windows, macOS, and Linux, according to a Sunday post from its developer, Dave Plummer.
Plummer, who wrote the original Windows Task Manager in the 1990s, said the product uses a shared C++ core with platform-specific interfaces: Direct2D and DirectComposition on Windows, UIKit on the Mac, and Qt on Linux. He said there is no Electron, HTML, or JSON shell. The public site describes Swift and AppKit on macOS 13 and later for Apple silicon and Intel, native Win32 on Windows 11, and a Qt 6 widgets app on Linux for X11 and Wayland.
A Linux-specific drop went out on Saturday. Plummer posted an AppImage, a Debian package, and a tarball, and asked desktop users to smoke-test what he called his first Linux GUI app and his first attempt at distribution packages. He later said he had run those builds on Ubuntu and on Omarchy, David Heinemeier Hansson's Arch-based desktop. On Sunday, Hansson said he had packaged the Linux beta for Omarchy's edge repository.
The application is currently a free beta. Plummer said a Pro edition is not for sale yet and that the forever-free version is on the product site. Because the utility is not yet digitally signed, the site warns that operating systems may require a manual first-launch approval.
TMOG is closed source. Plummer said the interface talks to a shared core that then calls platform helpers for metrics and actions. The site and his posts describe a summary view covering CPU, GPU, memory, storage, network, energy, and thermals, plus process trees, service controls, and optional phosphor-style themes.
The Mac beta had already been written up by Windows Central earlier in August, when Linux packages were not yet public. No comparable story was found in major outlets for the Linux packages or for the claim that Windows, macOS, and Linux are now peer native clients.
