Corner Time shows the date and time even when the menu bar is hidden and costs $1.99. It supports custom formatting, font settings, and always-on-top display.
Display Partitioner is a utility for splitting the screen and disabling part of it with a dark overlay, which is useful for ultrawide or damaged monitors.
AlwaysOnTop is a free macOS app that allows you to pin windows above others. It simplifies your workflow by reducing the need for constant Command+Tab switching.
macOS doesn’t support auto-scroll with the mouse wheel like Windows or Linux, but Scrollapp adds this feature and lets you change the scroll direction.