JSch is a pure Java implementation of SSH2. JSch allows you to connect to an sshd server and use port forwarding, X11 forwarding, file transfer, etc., and you can integrate its functionality into your own Java programs.
iText is a PDF library that allows you to CREATE, ADAPT, INSPECT and MAINTAIN documents in the Portable Document Format (PDF):
iText is used by Java, .NET, Android and GAE developers to enhance their applications with PDF functionality.
im4java is a pure-java interface to the ImageMagick commandline. For details about the project, please visit the
Ghost4J binds the Ghostscript C API to bring Ghostscript power to the Java world. It also provides a high-level API to handle PDF and Postscript documents with objects.