There are several popular mobile app development frameworks available, each with its own set of features, advantages, and disadvantages. Here are some of the most popular frameworks: React Native: Developed by Facebook Flutter: Developed by Google Ionic: Built on top of Angular, Ionic is a popular hybrid mobile app development framework  Xamarin: Developed by Microsoft. PhoneGap: Developed by Adobe These are just a few of the popular mobile app development frameworks available. Each framework has its own unique set of features and advantages, and the choice of framework depends on the specific needs of the project.