Kleave
Move and resize macOS windows with keyboard shortcuts. Sixteen actions, nothing else.
Default shortcuts
Every one can be rebound in Settings. Changes apply immediately.
Lives in the menu bar
No Dock icon, no main window. Click the mark to see every action with its shortcut.
How Kleave moves windows
Kleave moves a window by running one small shortcut, Kleave Window Mover, in the Shortcuts app. It passes along which app is in front and the window's position and size, and nothing else. It reads no window contents, records no keystrokes, and makes no network connections.
A setup window appears. Kleave does nothing until its two steps are done.
Click Allow…, then Add Shortcut…. macOS and the Shortcuts app each ask you to confirm.
Your keyboard shortcuts work right away, no relaunch. Turn it off at any time in System Settings → Privacy & Security → Automation.