IBM OpenDX, the successor to IBM Visualization Data Explorer, (known simply as DX) is a general-purpose software package for data visualization and analysis. It employs a data-flow driven client-server execution model and provides a graphical program editor that allows the user to create a visualization using a point and click interface. Applications can also be built on top of portions of the Data Explorer system, so that custom, turnkey applications can be easily developed using DX as the computational and rendering engine.
JTOpen is the open source version of the IBM Toolbox for Java. This set of Java classes allows any Java-enabled client to access data and resources on an iSeries or AS/400 server. It contains a JDBC driver, FTP, remote command invocation, SSL support, and tons of other functionality. It also includes GUI wrappers for most functions, a runtime PCML interpreter, and an XML parser. Most of the classes are available as open source, and the binaries are free to download and distribute.