SDKs

• Hecl - A mobile scripting language based on Java, capable of running on J2ME based devices.
• J2ME Polish - Open source, Ant-based build tool for J2ME that supports building for multiple platforms including Blackberry and Symbian.
• Extra Transit Mobile Interaction Suite - IDE and SDK for J2ME specializing in development of internet based applications.
• MBooster - Optimizing suite for .jar files. Compresses images, audio, zip files, and optimizes API calls.
• Micro Code - Cross-device development framework for J2ME. Supports more than 100 devices.
• Sun WTK - Official J2ME SDK by Sun.
• Sun Java Me SDK - 3_0-win) - Successor to WTK that integrates CLDC/MIDP development.
• Sony Ericsson - Supports various Sony Ericsson devices. Can run Mascot capsule software too.
• Soap ME - SOAP-compliant Web service container that supports dynamic development.
• Hecl - A mobile scripting language based on Java, capable of running on J2ME-based devices.

API Docs

• J2MEDocs - Documentation for J2ME and some vendor specific APIs.

IDEs

• NetBeans 6.1 - Mobility-pack, normal NetBeans and Java-ME SDK, all of them are required to set up MIDP development environment.
• Eclipse - Archive of all versions of Eclipse IDE.
• NetBeans 6.1 - Mobility-pack, stadard NetBeans and Java-ME sdk, all of them are required to setup MIDP devlopment enviorment.
• NetBeans 6.1 - Mobility-pack, stadard NetBeans and Java-ME sdk, all of them are required to setup MIDP devlopment enviorment.
• JCreator - Java IDE written in C++.
• NetBeans 6.1 - Mobility-pack, normal NetBeans and Java-ME SDK, all of them are required to setup MIDP development environment.

• NN JSON - JSON parser for CLDC 1.1.
• NN JSON CLDC 1.0 - Modified version of NN JSON for CLDC 1.0.
• J2ME Game Script Engine - A lightweight script interpreter for building flexible J2ME games, with a BASIC-like scripting language. Runs on J2SE/J2ME/Win C++ platforms; ideal for game rapid prototyping and customization.
• Cibyl - Environment to compile and run programs written in C, Objective-C, C++ and possibly Fortran on J2ME phones.
• J2ME Gradle template - Gradle template for J2ME development using Microemulator.

Decompilers

• Vineflower - Fork of Fernflower decompiler with improved output quality.
• Recaf - Bytecode editor that supports multiple decompilers.
• Fernflower - Analytical Java decompiler by JetBrains.
• Javadecompilers.com - Online Java decompiler that supports various decompilers.

Video Games

• PyLng - HandyGames .lng file parser written in Python.

Video Games

• Gravity Defied CPP - C++, SDL2 port of J2ME game of the same name.
• Moby Games - Database of J2ME games with links to official stores.
• The "New" J2ME software archive - 74GB+, sorted collection of J2ME games.
• J2ME Games at MyAbandonware - Curated catalog of abandoned J2ME games with direct downloads.
• Kahvibreak - Collection of J2ME games.
• Nowhere Dialogues - Dialogues from a Nowhere, a 2007 J2ME game, with character names reverse engineered.

Apps

• Discord J2ME - Unofficial Discord client for J2ME. Utilizes a proxy server for HTTP and gateway connections.
• UPI 123PAY - Official Unified Payment Interface(UPI)payments solution for feature phones by NPCI. Internet not required. Supported only in India.
• Telegram Micro - Telegram client.
• Jtube - YouTube client based on Invidious API.
• Hotpants - HOTP/TOTP client.
• J2ME Emu Software - Executables, source code of various emulators that run on J2ME.
• MeBoy - GameBoy emulator.
• VK4ME - Unofficial client for Russian social network VK for devices supporting CLDC 1.1 and MIDP 2.0.

Video Games

• Awesome Symbian - An Awesome List about everything related to Symbian, a discontinued mobile OS for ARM popular in the early 2000s. It supports J2ME applications.
• J2ME Fandom - Wiki of everything related to J2ME.
• Cell Phone Game Preservation Wiki - Wiki dedicated to phone preservation, including emulation and game dumps.
• J2ME Preservation - Archive of various J2ME software.
• J2MEFandom - Wiki of everything related to J2ME.

Decompilers

• Revive Nokia N95 - A quick guide to revive the legacy Nokia N95 and develop for it.
• J2ME In Nutshell - "Solid, no-nonsense reference to the 'alphabet soup' of micro edition programming, covering the CLDC, CDC, KVM and more."
• Java ME 3.4 Developer's Guide for NetBeans on Windows - Official tutorial on SDK 3.4, NetBeans on Windows variant.

Video Games

• J2ME In Nutshell - "Solid, no-nonsense reference to the "alphabet soup" of micro edition programming, covering the CLDC, CDC, KVM and MIDP APIs".

Academic Articles

• A Testing Method for Java ME Software - Reviews various unit testing methods for J2ME and introduces a custom one for NetBeans.
• Security Evaluation of J2ME CLDC Embedded Java Platform - Paper on J2ME security and vulnerability analysis.
• Automated GUI Testing for J2ME Software Based on FSM - Introduces a technique for automating tests of LCDUI J2ME applications based on FSM.
• Distributed Gaming using J2ME and XML - Writeup on creating a cross-platform using Oracle XML database for gaming.
• Developing Jini applications using J2ME technology - Book on Developing networking applications using Jini and J2ME.
• J2ME-Based Mobile Virtual Laboratory for Engineering Education - Paper on development of an Electrical Engineering Virtual Laboratory with J2ME.
• Technical Report: Bluetooth integration into CLDC/MIDP. - A technical report detailing the integration of Bluetooth technology within CLDC/MIDP environments.
• NanoBase: A tiny relation database manager for the JME CLDC/MIDP Platform - A paper presenting NanoBase, a lightweight relational database manager specifically designed for the JME CLDC/MIDP environment.
• MIDP based J2ME driver for accessing MySQL from mobile devices - A paper presenting a MIDP-based J2ME driver that enables mobile devices to access MySQL databases similarly to how JDBC functions.
• Experiences of Implementing BitTorrent on Java ME Platform - Detailed writeup on implementing BitTorrent client on Nokia S40. Includes methodology and results.

• r/J2MEGaming - Reddit community for J2ME, Symbian, and related platforms.
• HackClub Retrospect J2ME - J2ME development contest by Hackclub. Features Awesome J2ME in its resources section.
• Ketai Wiki - Wiki dedicated to cataloging games from Japanese Feature Phones (keitai), pre-Android/iPhone mobile devices released in Japan.

Video Games

• Post J2ME devs discord
• Kahvibreak discord

SDKs

• JL Mod - Fork of J2ME loader with Mascot capsule v3 support.
• J2ME Loader - J2ME emulator for Android.
• FreeJ2ME - J2ME emulator with LibRetro, AWT and SDL2 frontends.
• JS2 J2ME - J2ME emulator for Firefox OS.
• PSPKvm - J2ME emulator for PSP.
• FreeJ2ME Plus - Active fork of FreeJ2ME.
• KEmulator nnmod - Open source J2ME emulator in Java, based on KEmulator 1.0.3.
• SquirrelJME - Java ME 8 Virtual Machine for embedded and Internet of Things devices.

• Emulation General Wiki - Has a list of J2ME emulators including official SDK emulators by various phone vendors.

SDKs

• Mobile Phone Museum - Registered charity and museum for mobile phones. Currently has over 2,800 models over 250 brands.