- Base64 is a Public Domain Java class for encoding and decoding Base64 notation. There are one-liner convenience methods as well as Input and Output Streams.
- FileDrop is a Java tool to make it easy to drag and drop files from your computer's OS into a Java program. With just a few lines of code you can receive an array of files (java.io.File) describing the files that the user just dropped.
- Xmlizable is a set of Public Domain Java tools for Xmlizing, like Serializing, Java objects. There is built-in support for parsing and rebuilding basic Java data structures such as java.util.Collections and java.util.Maps. There is also an Xmlizable interface for making your own objects Xmlizable to and from XML via SAX2 events.
- Simple Servers is a set of Public Domain Java classes to help embedding network servers in your code. They are thread-safe and robust and well-suited to either GUI or command line applications.
- librxtxSerial.jnilib is the RXTX native library compiled with 64-bit Intel support for Java 6 on Mac OS X (also i386, ppc, and ppc64). You're welcome to follow the various instructions online for compiling it yourself, but it gave me a lot of grief, so here is a direct copy (if you trust me!). I finally had to patch SerialImpl.c and SerialImpl.h (manually) based on the patch instructions here and blog posting here. I also discuss this on my blog.