Galen Framework - Automated testing of look and feel for your responsive app
Cypress.io - Slow, difficult and unreliable testing for anything that runs in a browser. Install Cypress in seconds and take the pain out of front-end testing.
Reapp - An easier, faster way to build apps with React and JavaScript.
RestControl - Modern and powerful framework for testing and validation REST api
Bitrise - Tens of thousands of agencies, startups and enterprise companies with mobile apps - including Runkeeper, Grindr, Duolingo and more - use Bitrise to automate their way to increased productivity & speed
React Native - A framework for building native apps with React