Simple, no-frills Java driver for the CueCat scanner. [Open Source, GPL]

A driver implementation for the Java Communications API for the WindowsCE/Pocket PC architecture. This driver supports RS232 (serial) ports (and possibly IRCOM but untested).

A Java API for controling 1394 Digital Cameras (based on libdc1394 library). [Open source, LGPL]

Java classes for serial port access. [Commercial, Demo]

Java framework for controlling iButton and MicroLAN 1-wire devices. [Open Source, BSD-like]

Java package for communicating with the Lego Mindstorms RCX Brick. The core of the RCX Brick is a Hitachi H8 processor that can be controlled in a variety of ways to read sensors, activate motors and do general processing. [Open Source, GPL]