React Native
React Native, short for React Native Framework, was created by Facebook (now Meta) in 2015. React Native is a JavaScript framework for building mobile applications using a single codebase for both iOS and Android. Developers can access React Native through the official site: React Native Setup & Downloads, which provides installation guides, CLI tools, and documentation for Windows, macOS, and Linux platforms.
Flutter
Flutter, short for Flutter SDK, was created by Google in 2017. Flutter is an open-source UI toolkit for building natively compiled applications for mobile, web, and desktop from a single codebase. Developers can access Flutter via the official site: Flutter SDK Downloads, which provides the SDK, documentation, and setup instructions for Windows, macOS, and Linux platforms.
Bootstrap
Bootstrap, short for Bootstrap Framework, is an open-source front-end toolkit for building responsive, mobile-first websites and web applications. Originally developed by Mark Otto and Jacob Thornton at Twitter in 2011, Bootstrap can be downloaded and used for personal or business projects via getbootstrap.com/download.