Corn Gate is designed to simplify service definitions and implementations in Java. It comes with several handy out-of-the-box functionalities, including security, registry, Spring and EJB integration, filters, shared data stages, client contexts, etc. JSON-RPC/HTTP and REST/HTTP protocols are supported. Remote service calls can be done through various client technologies. Since Gate supports standard HTTP communication mechanisms, almost any client technology can access services remotely.
Glue Stick is a dependency injection framework for Java applications. Beans may be defined in Groovy scripts, GSON configuration files, or Spring Framework XML files. Compared with other dependency injection frameworks for Java, Glue Stick aims to be faster at assembling applications and simpler to use.
Immutables allows you to embrace immutablity to tackle complexity and concurrency challenges. To get the benefits of immutability in Java, there's an annotation processor to easily create simple and consistent value objects. You can think of it as Guava's Immutable Collections but for regular objects. It includes support for JSON marshaling, MongoDB repositories, and JAX-RS.
Jolokia is a fresh way of accessing JMX MBeans remotely. It is different from JSR-160 connectors, as it is an agent based approach that uses JSON over HTTP for its communication. It provides new features for JMX remoting: bulk requests allow for multiple JMX operations with a single remote server roundtrip, there is a fine-grained security mechanism for restricting JMX access on specific JMX operations, JSR-160 proxy mode, and history tracking, to name a few. Jolokia's origins are in jmx4perl. Client bindings in addition to Perl have already been added, and more are planned.
Orient Key/Value Server is based on the Document Database technology and is accessible as an embedded repository via Java APIs or via HTTP using a RESTful API. It uses a new algorithm called RB+Tree, derived from the Red-Black Tree to maintain tree balance, and from the B+Tree storing the links to records in pages to optimize memory consumption and loading time. Orient Key/Value Server scales out very well in a cluster with thousands of running machines: Orient will divide the load among all the nodes. Clustering, by default, works in auto-discovery mode: when a node starts, it attaches itself to the cluster if one is available. When a node goes down, the cluster automatically rebalances itself.