Avalonia vs Gumby: What are the differences?
Developers describe Avalonia as "A multi-platform .NET UI framework". Avalonia is a multi-platform windowing toolkit - somewhat like WPF - that is intended to be multi- platform. It supports XAML, lookless controls and a flexible styling system, and runs on Windows using Direct2D and other operating systems using Gtk & Cairo. On the other hand, Gumby is detailed as "A Flexible, Responsive CSS Framework - Powered by Sass". Create rapid and logical page layout and app prototypes with a flexible and responsive grid system and UI kit.
Avalonia and Gumby can be primarily classified as "Front-End Frameworks" tools.
Avalonia and Gumby are both open source tools. It seems that Avalonia with 6.75K GitHub stars and 617 forks on GitHub has more adoption than Gumby with 2.95K GitHub stars and 479 GitHub forks.