twui is a fully auto-layout, stylable, declarative/immediate mode UI, with a large set of widgets, docking, tabs, nodes, text editors, inputs, curves etc.
it is part of the encompassing two library

Here are the basic build instructions to get twui up and running on linux/osx/windows:

• git clone --recursive https://github.com/hugoam/twui
• cd tgfx
• for linux (make):
  • bin/linux/genie --gcc=linux-gcc gmake
  • cd build/projects/gmake-linux
  • make config=debug64 -j8
• for osx (make): bin/darwin/genie --gcc=osx gmake
• for osx (xcode): bin/darwin/genie --xcode=osx xcode9
• for windows (visual studio): bin/windows/genie vs2017