Today I'm talking about Unison, a desktop GUI framework for Go developed by Richard Wilkes. Unison renders its own widgets and has all the usual ones such as tables, menus, text fields, images, buttons, check boxes, progress bars, and SVG support. Supported platforms are Linux, MacOS and Windows. As the author notes, he develops it for his own projects but is open to suggestions. Check it out to see if it fits your requirements!
https://github.com/richardwilkes/unison