Add Fyne.io

[andydotxyz]

Tool Name:
Fyne.io

Link to the tool website:

• https://fyne.io

• This tool supports creating desktop apps on more than one desktop operating system (Windows, Linux, OSX)

Anything else you want to add:

It also supports Mobile apps with the same codebase and has some support for IoT and web delivery as well.
It is the most popular (by GitHub stars) Golang GUI toolkit, and according to OSSInsight is behind only Flutter and React Native for building cross platform apps without an embedded web renderer.