BlackBerry Java Development Environment : The BlackBerry^™ JDE is a complete application development environment for building J2ME applications. The BlackBerry JDE has full support for CLDC and MIDP for those developers wishing to maintain seamless J2ME portability in their wireless applications.

Java Card Technology: All you need to know about Java Card and Smart Cards

BREW Software Development: QUALCOMM, developer - getting started area.

Sun Microsystems, Inc.

The J2ME^TM Connected Limited Device Configuration (CLDC) outlines the most basic set of libraries and Java virtual machine features that must be present in each implementation of a Java 2 Platform, Micro Edition environment on highly constrained devices.

Java Card 2.1.2 Development Kit: Sun Microsystems Java Card^TM 2.1.2 Development Kit includes a complete environment in which applets written for the Java Card platform can be developed and tested. It enables developers to create applets that utilize the features of version 2.1.1 Java Card^TM API.

Java Technology & Web Services Downloads - Java Web Services Developer Pack: Sun Microsystems Java Embedded Server 2.0 (Single User License) for download.

MIDP Builder: MIDP Builder is a application development tool that builds upon the fundamental projects created with the J2ME Wireless Toolkit.

Mobile Information Device Profile (MIDP): The Mobile Information Device Profile (MIDP) is a set of Java^TM APIs which, together with the Connected Limited Device Configuration (CLDC), provides a complete J2ME^TM application runtime environment targeted at mobile information devices, such as cellular phones and two-way pagers. The MIDP specification addresses issues such as user interface, persistence storage, networking, and application model.

Motorola Java Application Loader Lite (JAL Lite): This application will allow you to download local (non-network) applications to your Motorola J2ME-enabled phone, the Motorola i85s/i50sx.

Nextel Open Windowing Toolkit: Motorola, Nextel and Digital Focus developed Open Windowing Toolkit which is a set of UI classes that developers may use to create user interfaces for J2ME handsets. The toolkit employs a container/component model, and provides interfaces to permit developers to create their own user interface components. The toolkit is designed specifically for MIDP handsets with a small amount of screen real estate. It is built on top of MIDP's Canvas class.

Nextel RMS Toolkit: Motorola, Nextel and Digital Focus with the RMS toolkit provides classes that simplify record management on MIDP devices. The networking feature of the RMS toolkit uses some classes from the networking toolkit, not yet released. These networking classes have been documented and included in the current release of the toolkits.

JavaTM 2 Platform Micro Edition and MIDP: JavaTM 2 Platform, Micro Edition (J2ME) is designed for use in resource-constrained mass-market consumer devices.

Simplicity for Mobile Devices: Building robust programs that run on MIDP Java-enabled cell phones, PDAs, pagers and other mobile devices, including Motorola, Nokia, Ericsson, RIM, PALM OS, and Treo. The MID Emulator helps you build and test MIDlets while adapting to the needs of particular devices. Simplicity includes exclusive features including our Visual Composer, Execution-On-The-Fly code execution(tm), and Code Sourcerer(tm).

Simplicity for Mobile Servers: A rapid application development tool that integrates the enterprise with J2ME/MIDP. It includes an enhanced version of Simplicity for Mobile Devices and an integrated server-side Java development tool. Simplicity includes Execution-On-The-Fly(tm) code execution and XML Transaction Engine.

Simplicity for Palm OS Platform: Rapid application development tool created for the Palm OS platform using Java technology. Simplicity includes Visual Composer, Execution-On-The-Fly(tm), Code Sourcerer(tm), and a developer's version of IBM's J9 Virtual Machine

VirtuoSimo: VirtuoSimo enables the development, test, debug and simulation of Java Card SIM Toolkit applications (Java Card applets running on GSM SIM cards).

Assisted GPS

gpsOne for CMDA

Wi-Fi – Skyhook Wireless

Ultrawideband – Ubisense

Indoor LBS