CRest (Client REST) is a lightweight library that simplifies the integration of third party RESTful services into Java applications. CRest is mainly annotation-driven, allowing the developer to focus on the essential aspects of the integration of a REST service, such as the definition of the Java interface that maps the remote REST methods and the data model the interface will deal with. The rest is achieved by annotating a plain Java interface with the relevant information such as the service end-point, the desired timeouts, URL formats, etc. CRest will handle everything else, including HTTP request generation, auto marshalling of the response, and more.
GNU WebSocket4J is a WebSocket protocol implementation in Java. It allows you to build Web applications that interact with applications running in a JVM. GNU WebSocket4J implements both the server and client side of the protocol, so it can be used to build both WebSocket servers and clients.
InfinityDB is an all-Java B+Tree database engine that is embeddable in the smallest to the largest applications that run on hand held devices, workstations, servers, or in distributed systems. InfinityDB provides a data integrity guarantee through all non-media failures, provides a simple API with only a few basic methods, and requires no administrative support. Version 2 offers full ACID transactionality without a log and with fine-grained locks. Programmers can easily superimpose their own data model or employ the Entity-Attribute-Value model by direct low-level access. The basic engine provides multi-valued or set attributes, all primitive Java types, unlimited Large Objects, heterogenous values, composite keys (Entities) and values, and unlimited sparse attributes, all extensible in-place with no schema changes.
JAML (Java Application Markup Language) is a library for easier development of Java applications. It does this by allowing a declarative XML-based design of user interfaces. Although targeting the Java Swing Framework, it is extensible to initialize practically every Java object. A key aspect of the technology is the reduced complexity of JAML as opposed to the standard Java syntax.
NW.ORM is a simple wrapper for accessing databases using hibernate in Java. It makes working with multiple databases easy. Aside from adding dependencies to your project and placing your hibernate configuration files in your classpath, no extra configuration is required. NW.ORM provides base classes for JPA-based class definitions. You can query using your method of choice. NW.ORM supports Criteria, HQL, and raw SQL.
Niocchi is a Java crawler library implementing synchronous I/O multiplexing. This specific type of implementation allows crawling tens of thousands of hosts in parallel on a single low end server. Niocchi has been designed for big search engines that need to crawl massive amount of data, but can also be used to write no-frills crawlers.
Property Binder is a Java library that provides typed access to entries in properties files. It offers such access by allowing a programmer to provide it a Java interface whose methods represent the keys of the properties file. The methods can be annotated to indicate what property the method represents, what default value(s) it should assume if the property is not present, and what pattern separates the individual values of multi-valued properties.
SDMetrics Core is a Java library to calculate metrics of structural design properties such as coupling, size, and complexity for UML designs. It also checks design rules to automatically detect incomplete or incorrect design, and adherence to style guidelines such as circular dependencies or naming conventions. The library provides an XMI parser for import of XMI 1.x files with UML1.3/1.4 models, and XMI 2.0/2.1 files with UML 2.x models. Design metrics, rules, and XMI import are highly customizable.
Simple Java Mail aims to be the simplest to use lightweight mailing framework for Java, while being able to send complex email messages including attachments and embedded images. The Simple Java Mail framework essentially is a wrapper around the JavaMail SMTP mailing API that allows users to define email messages on a high abstraction level without having to deal with terminology such as "multipart" and "mimemessage".
SimpleTemplate is a simple template engine written in Java. You can generate formatted text from a Java bean. You can use it for generating XML files, Web sites, etc. It features simple template directives, user-selectable template directive separators, alias creation using with and set directives, support for indexing into arrays, collections, and maps, looping on an array or a collection, a simple include mechanism to reuse template files, conditional evaluation using if and ifelse, and custom list separation settings (prefix, suffix, and separators). Template files can be read from the filesystem, class path, or just a string. Support for methods, aka. sub templates.