Proposals

JSR- 914: The Java Message Service (JMS) API is a Java Message Oriented Middleware API for sending messages between two or more clients. It is an implementation to handle the Producer-consumer problem.

Java API for WebSocket (JSR-356), specifies the API that Java developers can use when they want to integrate WebSockets into their applications - both on the server side as well as on the Java client side.

JAX-RS: Java API for RESTful Web Services (JAX-RS) is a Java programming language API spec that provides support in creating web services according to the Representational State Transfer (REST) architectural pattern.

Eclipse Jersey is a REST framework that provides JAX-RS (JSR-339) Reference Implementation and more. Jersey provides its own APIs that extend the JAX-RS toolkit with additional features and utilities to further simplify RESTful service and client development. Jersey also exposes numerous extension SPIs so that developers may extend Jersey to best suit their needs.
 
Goals of Jersey project can be summarized in the following points:

Eclipse Tyrus is the open source JSR 356 - Java API for WebSocket reference implementation for easy development of WebSocket applications. WebSocket protocol defined by IETF provides bi-directional communication between the server and the remote host. The pros are mainly the ability to communicate both ways, low latency and small communication overhead.

Eclipse Open Message Queue (OpenMQ) is a complete message-oriented middleware platform, offering high quality, enterprise-ready messaging.

OpenMQ is included in GlassFish.

Writing scalable server applications in the Java™ programming language has always been difficult. Before the advent of the Java New I/O API (NIO), thread management issues made it impossible for a server to scale to thousands of users. The Eclipse Grizzly NIO framework has been designed to help developers to take advantage of the Java™ NIO API.

Eclipse Mojarra is the Reference Implementation for the JavaServer Faces specification (JSR-372). JavaServer Faces (JSF) is a Java specification for building component-based user interfaces for web applications. It is also a MVC web framework that simplifies construction of user interfaces (UI) for server-based applications by using reusable UI components in a page.

Mojarra is included in GlassFish.

Eclipse JSON Processing (JSON-P) is a Java API to process (e.g. parse, generate, transform and query) JSON documents. It produces and consumes JSON in a streaming fashion (similar to StAX API for XML) and allows to build a Java object model for JSON using API classes (similar to DOM API for XML).

Eclipse GlassFish Tools enables publishing of Eclipse IDE projects to GlassFish as well as controlling GlassFish server from within Eclipse IDE. It extends Eclipse Web Tools Platform.