Project is hosted in the Eclipse organization at GitHub.

Eclipse LSPHub

Eclipse LSPHub defines a data model for a kind of ubiquitous plug-ins format for all editors/IDEs. It focuses on describing artifacts that implements platform/tools indenpendent language services like LSP.

The data model defines the concept of an Extension which is a logical group of Contributions. A contribution provides support for editing file of given types (typing is being made via UTI).

Eclipse Jersey

Eclipse Jersey is a REST framework that provides JAX-RS (JSR-370) 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

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 Grizzly

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.