59pixels has a collection of Java ME libraries which are released on Creative Commons Attribution-Share Alike 3.0 Unported License:
JSONPull is a simple and efficient JSON parsing (’pull’ parsing, similar to XML pull parsing) for Java ME and Java SE.
Java ME RFID is an application for mobile devices which communicates with a Cathexis’ IDBlue and a database server. IDBlue is a Bluetooth RFID (Radio Frequency Identification) pen which combines RFID reader capability with Bluetooth communication. This application reads tag ids through IDBlue device, queries such a ID in a database server and presents the user with info associated to the read tag.
Marge is a framework that help developers to easily create Bluetooth applications in Java, these applications can be in Java ME or Java SE platform.
Marge’s Demos repository provides two Java ME clients: One is a basic Bluetooth mobile controller using JSR 82 (Java APIs for Bluetooth), the other is an enhanced (and more fun) version using JSR 256 (Mobile Sensor API or MSAPI).
A highly regarded commercial J2ME title now released as open source. Take your pick from 10 maxed-out street legal racers and prove your mettle on 10 international tracks. The game has three modes of play, practice, tournament or time trial, with up to 8-way multiplayer on supporting handsets.
The game is localized in English, French, Italian, German, Spanish, Portuguese, Russian and Czech. The editors and tools are currently English only.
Fountain 3D is an open source wireframe 3D engine that even runs on the crappiest cellphones without OpenGL ES.
Twim is a mobile Twitter client for Java enabled phones. You are able to view your recent time line, replies and your status archive. You are also able to update your current status from the application.
Sociallight Mobile is an open-source, location-aware mobile client built on top of the Socialight API.
ZXing (pronounced “zebra crossing”) is an open-source, multi-format 1D/2D barcode reader library implemented in Java. The goal is to support decoding of QR Codes, Data Matrix, and the UPC family of 1D barcodes. Working clients for Android, Java ME , iPhone, and BlackBerry devices will be provided.
Movino consists of: