Apache Cayenne is a persistence framework that provides object-relational mapping (ORM) and remoting services. It has a wealth of unique and powerful features and can address a wide range of persistence needs. Cayenne seamlessly binds one or more database schemas directly to Java objects, managing atomic commit and rollbacks, SQL generation, joins, sequences, and more. With Cayenne's Remote Object Persistence, those Java objects can even be persisted out to clients via Web Services. With native XML serialization, objects can be even further persisted to non-Java clients.
JGraphpad Pro is a complete application framework for rapid development of JGraph tools. It is meant for developers who wish to provide a stand-alone, rich-client graph application. The user interface is configurable with XML, and it uses a plugin architecture for extra functionality. It features a wide range of application components like palette, overview, the ability to export to many image and XML formats, copy and paste, drag and drop, rich text labels, database or backend connectivity, and visual complexity management. You can use it to create workflow editors, call graphs, CAD tools, network diagrams, database visualization tools, and more.
oRTP is a library implementing the Real-time Transport Protocol (RFC3550), written in C. It is easy to use and provides a packet scheduler for sending and receiving packets on time, adaptive jitter compensation, automatic sending of RTCP compound packets, and the RTCP parser API. It works with IPv6.
fastutil extends the Java Collections Framework by providing type-specific maps, sets, lists, and queues for Java with a small memory footprint and fast access and insertion. It also provides big (64-bit) arrays, sets and lists, and fast, practical I/O classes for binary and text files.
OpenEJB is a simple, lightweight Enterprise JavaBeans (EJB) container and server. You can embed OpenEJB in your own applications, or in a Web application server like Tomcat, or run it as a standalone EJB server. It supports EJB 3.0, 2.1, 2.0, and 1.1, and has partial support for EJB 3.1.
Dwarf is a modular Java framework for developing network server applications based on Internet standards. While focused on building service-based applications like Web servers, mail servers, and messaging services, it can also be used for other applications. The core consists of several packages, which provide a multithreaded kernel, security based on the standard Java 2 Platform Security architecture and the JAAS, logging, configuration, and a management system. Modularity and a fine-grained API allow one to extend the server, to reuse the existing services for a new application, or even create new services based on the existing ones.
Ptplot is a set of Java classes that can be used as an applet or an application for graphing datasets. It reads PlotML, binary, or ASCII data, is autoranging, and automatically or manually labels axes and tick marks. It can plot live, animated plots and provides zooming. It also includes Bourne shell scripts and DOS .bat files that can be used as a replacement for xgraph, the X11 graphing tool.