If you're a Windows power user looking for a set of versatile tools that enhance productivity, choose Microsoft PowerToys. It offers a variety of utilities, like FancyZones for advanced window management and PowerToys Run for quick app launching. However, if you want a focused solution specifically for window snapping, this might not be your best pick.
On the other hand, if you're a Mac user seeking a straightforward, keyboard-driven snapping tool without the clutter of extra utilities, go for Rectangle. It provides excellent functionality with minimal setup and no telemetry, but keep in mind that its advanced features require a paid Pro version. Choose Rectangle if your primary need is efficient window management rather than an all-in-one solution.