wtop is an htop-style process viewer for Windows, written in pure C using only the Win32 API and the C standard library, with no external dependencies.
Features:
- Per-core CPU meters and a physical memory meter
- Process table with PID, CPU%, working-set memory, thread count, and command name
- Keyboard navigation, live name filtering, and a parent/child tree view
- Kill the selected process with F9 (with a confirmation prompt)
- I/O tab (Tab or F6) showing network Rx/Tx and per-disk read/write rates and busy percentage
- Configurable refresh interval, sort column, and meter style, persisted between runs
- Self-install with --install / --uninstall (per user, no administrator rights required)
Download wtop.exe below, or build from source with GCC (MSYS2 UCRT64).