JET API
- Java libraries and Java Beans providing access to 3270 and 6530 mainframe hosts.
- http://www.platypuspartners.com/jetapi/jetapi.html

JTOpen
- Open Source toolkit for accessing AS/400 features from Java code. Requires the AS/400 operating system. [Open Source, IBM Public License]
- http://jt400.sourceforge.net/

JNIWrapper
- Bridge technology that allows calling functions from native APIs or from any native DLLs and libraries without using JNI in Java Programs. Available for Windows, Linux and Mac. [Shareware]
- http://www.teamdev.com/jniwrapper/

Mobile Control
- A Java-based M2M solutions that combines the open standards-based technologies for remote control and management of Java-capable mobile devices.
- http://www.mobile-control.org/

GNU Readline for Java
- Java-Native-Interface wrapper to readline for every platform supporting the readline, history and termcap libraries. [Open Source, LGPL]
- http://java-readline.sourceforge.net/

xFunction JNI Proxy
- Java class library allowing you to make any native API call and invoke functions from DLLs and shared libraries without having to learn or use JNI and C/C++ programming. Available for Windows and Linux. [Shareware]
- http://www.excelsior-usa.com/xfunction.html

Java UNIX Extension API
- Java Native Interface wrapper which provides access to extra OS functionality on Unix platforms. [Open Source, GPL-like]
- http://www.xenonsoft.demon.co.uk/products/javaunix/index.html