FlowBite - Build UI interfaces and simplify the process of integrating into live websites with Tailwind CSS
Bootstrap Zero - Open-source, free Bootstrap templates collection.
DaisyUI - Free UI components plugin for Tailwind CSS
Bootstrap Magic - Create your Bootstrap 4.0 themes easily with magic
Tailwind CSS - A utility-first CSS framework for rapidly building custom user interfaces.
Material Design for Bootstrap 4 - Powerful and free UI KIT for the newest Bootstrap 4 and Material Design