RESTEasy

RESTEasy is a Java framework that provides support for developing RESTful Web Services. It is an implementation of the JAX-RS specification, which is the Java API for RESTful Web Services. RESTEasy is primarily used for creating and deploying RESTful services in Java, and it is known for its simplicity and ease of use.

RESTEasy is an implementation of the JAX-RS (Java API for RESTful Web Services) specification. JAX-RS is a set of interfaces and annotations offered by Java for creating RESTful web services. The framework facilitates the development of services that use HTTP protocols to communicate and follow the REST (Representational State Transfer) architectural principles.

RESTEasy can be easily integrated with various Java EE (Enterprise Edition) and Java SE (Standard Edition) applications. It's particularly well-suited for use with the Java EE ecosystem. Besides the standard JAX-RS features, RESTEasy includes additional features like JSON-P (JSON Processing), Asynchronous HTTP, Server-sent Events (SSE), and more.

It supports pluggable providers to extend its capabilities. Providers can be used for things like MessageBodyReaders/Writers, ExceptionMappers, and ContextResolvers. RESTEasy includes a client API for accessing RESTful resources. The client API allows for easy interaction with RESTful web services.

Being a JAX-RS implementation, RESTEasy applications are portable across any server container that supports JAX-RS. The framework supports various data formats including XML, JSON, YAML, and more for data exchange.

It can be integrated with popular frameworks like Spring and can be run in servlet containers like Tomcat or application servers like WildFly.