wxwidgets (conda): wxWidgets is a C++ library that lets developers create applications for Windows, macOS, Linux and other platforms with a single code base. It has popular language bindings for Python, Perl, Ruby and many other languages, and unlike other cross-platform toolkits, wxWidgets gives applications a truly native look and feel because it uses the platform's native API rather than emulating the GUI. It's also extensive, free, open-source and mature.
Keywords: c-plus-plus|cocoa|cross-platform|cross-platform-desktop|desktop|gtk|gui|gui-framework|linux|macos|portable|win32|windows|wxwidgets|x11