The application is designed to streamline the way users interact with windows on a Mac, moving beyond the traditional title-bar-only interactions. Its primary features include:

It offers modified behaviors for standard OS buttons, such as right-clicking the green button to maximize or the red button to quit the entire application. Evolution and Legacy

This "snapping" feature allows users to drag a window to the edges or corners of the screen to automatically resize it into halves, quarters, or full-screen.

Flexiglass 1.7 is a version of the macOS window management utility developed by Nulana, primarily recognized for introducing compatibility with macOS Mojave.

Users can move or resize any window by hovering over it and pressing a definable modifier key (like Option or Command) while dragging, rather than needing to click the title bar or corners.