JHipster is a Yeoman generator used to create Spring Boot and AngularJS projects. It allows developers to migrate monolithic applications to microservices architectures. With over 17,000 downloads in the last 30 days, 233 contributors, and 4,346 stars on GitHub, JHipster is a popular tool for building microservices with Spring Boot and Angular. It can help split a monolithic application into independently deployable services.