Trying to find GUI options for Julia (windows + linux)

AFAIK the only packages with bindings to a library that use the native GUI widgets of each platform are Libui.jl and IUP.jl, both by @joa-quim (not sure why they’re not listed in Package Observer’s listing for GUI packages). For the latter, there’s work in progress by @disciple-of-reason for compatibility with Julia 1.0 – see this thread for details.