PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody looking for a feature rich calculator. It includes an optional RPN mode and multi-line display, a choice of button layouts, an extensive set of unit conversions and constants, a paper tape, multiple undo and redo, engineering and scientific notation, as well as support for hexadecimal, octal, and binary calculations.

BetterDisplay is a truly wonderful tool! It let's you convert your displays to fully scalable screens, allows brightness control, provides XDR/HDR upscaling (extra brightness beyond 100% on compatible displays), full dimming to black,helps you create and manage virtual displays (dummies) for your Mac, create Picture in Picture windows of your displays and gives you a host of other features to manage your display's settings easily from the menu bar.