Open-source React Native UI Library
"Galiois a React Native framework that comes with a lot of carefully crafted, ready to be used components and a beautiful typography. It's a 100% free and open source project, licensed under MIT License.
Galio has a gorgeous base theme that adapts to each project. Built with real app examples, component demos, guides, and how-to's to get you up and running with mobile apps faster than ever before."