Lightweight, fast Java-centric Lua interpreter written for both J2ME and J2SE, including libraries for basic, string, table, package, math, coroutine packages, an optional compiler, luajava bindings, and JSR-233 pluggable scripting engine bindings.

http://sourceforge.net/projects/luaj/

Batiscafo is a brand new game for mobile devices. It was made with Sun Wireless Toolkit for j2me devices capable of MIDP 2.1 and CLDC 1.1. In it, you navigate in a batiscafo to the deeps of the sea searching for treasures.

http://sourceforge.net/projects/batiscafo/

Intelligent SMS is an instance based learning SMS tool for mobile devices with J2ME support.

http://sourceforge.net/projects/ismsmobile/

Hammock is a mock object framework for J2ME devices. It is used in conjunction with unit test frameworks like JMUnit and J2MEUnit. The framework includes mocks for many of the J2ME UI and I/O classes as well as a utility, HammockMaker, for generating mocks of other classes.

http://freshmeat.net/projects/hammock/

Joerg Jahnke has released an updated version of JMEBoy. JMEBoy is a Java-based Gameboy and Gameboy Color emulator for mobile devices. If you want to play Gameboy games on your mobile phone you should try this emulator.

Release notes:

The binaries of the final releases for JMEBoy 1.2.4 and JSwingBoy 1.2.4 have been added for download. These releases are built from the code of SVN revision 197.These releases bring some performance improvements for the video chip.Additionally the JME version adds on-screen direction buttons.Please take a look at the release notes for more information on the changes. Choose the emulator download according to the desired target platform:- JMEBoy runs on Java-enabled (MIDP 2.0) mobile devices.- AndroidBoy runs on Android-based mobile devices.- JSwingBoy runs on PCs with a JDK/JRE5 or later installed.

Plenty of free GBC homebrew ca be found here: http://www.pdroms.de/files/gameboy/

Thanks to http://www.aep-emu.de for the news.

http://sourceforge.net/projects/javagb/

goText is a program for mobile phones that allows you to send text messages over GPRS/EDGE/UMTS. It was made in Java (J2ME) MIDP 1.0 CLDC 1.0 and so avaible for all java mobile devices.

http://sourceforge.net/projects/gotext/

Guitar Trainer is an application for mobile devices that helps musicians learn the fretboard of their stringed instrument thoroughly. It supports guitar, bass, banjo, ukulele, mandolin, and cavaquinho (in standard and alternate tunings). It includes a training mode, a game mode, and a tuner. It should work on any Java device supporting CLDC 1.1/MIDP 2.0.

http://freshmeat.net/projects/guitartrainer/

Bomber is a J2ME MIDP 2.0 game based on a Spectrum 48k classic original game. It was developed using Sun Java Wireless Toolkit and is tested on Nokia 6234 mobile phone.

http://sourceforge.net/projects/bomberj2me/

This game (not finished) was based on fiction characters to create a mixture between maze/puzzle and action to play in mobile phones (j2me).

http://sourceforge.net/projects/mexrescate/

Microlog is a small logging library for Java ME (J2ME) like Log4j. It has support for logging to console, file, RecordStore, Canvas, Form, Bluetooth, a serial port (Bluetooth, IR, USB), Socket(incl SSL), UDP, Syslog, MMS, SMS, e-mail or to Amazon S3.

http://sourceforge.net/projects/microlog/