Flume : A React-powered node editor and runtime engine. Build apps that are resilient to changing requirements by modeling your business logic as a JSON graph...
Expo : Expo is a framework and a platform for universal React applications. It is a set of tools and services built around React Native and native platforms ...
Sanity : Sanity is a headless, real-time CMS where the front end is an open source React-based construction kit and the back end is a graph-oriented cloud data...
GatsbyJS : Gatsby is a modern framework for blazing fast websites, made with React and GraphQL.
Strut : An HTML5 Presentation Editor. A GUI / Authoring Tool for ImpressJS and Bespoke.js
Source at https://github.com/tantaman/Strut
Tina is an open-source site editing toolkit for React-based sites like Next.js & Gatsby to build content management directly into your website.