wxWidgets

linux

A C++ library that lets developers create applications for Windows, macOS, and Linux from a single codebase

Pronunciation

Correct

W-X-widgets

/ˈdʌbəl juː ɛks ˈwɪdʒɪts/

The 'wx' prefix is spelled out as two letters 'double-you-ex'; 'Widgets' is spoken as a normal word.

Source: www.wxwidgets.org(official spec)