I am working on v3.0 that will use its own portable GUI toolkit (in assembly language) with much prettier UI. On this page you can see some preliminary experimental screenshots: https://fresh.flatassembler.net/index.cgi?page=content/artic...

Still not GTK though. It is too heavy for assembly language programming and will not allow portability for example on MenuetOS or KolibriOS assembly written OSes.