BtFree is a library for creating client-server applications that communicate over a Bluetooth connection. You can use it in your MIDP application or in a Java application that uses an implementation of JSR82. It allows you to create applications with client-server interaction easily, avoiding the need to know JSR82 and the problems related.
UPN-Calc is a RPN (Reverse Polish Notation) calculator for mobile devices that support J2ME and MIDP 1.0. It features arbitrary precision unnormalized BCD arithmetic and provides many scientific standard functions, such as sin, cos, tan, arcsin, arccos, arctan, 1/x, sqrt(x), exp(x), ln(x), and y^x.
Spring ME is a version of ME that not only runs on your cell phone, but also on any other Java platform not supporting reflection. It is to Java ME what Spring is to Java SE and Java EE, which is indicated by the name. However, the "ME" (Micro Edition) suffix not only refers to the platform it supports. It also refers to the size of the runtime, which is pretty minimal. In fact, it's pretty much non-existent, and therefore ideal for situations in which you cannot afford the sheer size of the traditional Spring runtime.
J2ME ChartComponent is an MIDP 2.0 charting component with basic functionality for showing charts on embedded devices. It currently implements horizontal bar, vertical bar, and line charts. An incomplete and experimental pie chart component is implemented, as well as a very simple 'legenda'.
mOOo Impress Controller is a set of tools used to control slides presentations on OpenOffice.org Impress. It consists of a Java ME application (mobile) and a Java SE Add-On (desktop) that is installed in OOo (OpenOffice.org). The user can switch slides (next and previous) while a timer (used for presentation controlling) is displayed on the screen of the mobile device. It uses Bluetooth for Computer-Device communication with Project Marge and UNO API for OOo integration.
MiniPauker is a flash card based learning application for mobile devices and handhelds. It is based on the leitner cardfile system and is compatible with Pauker (http://pauker.sf.net, the desktop version of this software). MiniPauker uses a combination of ultra-shortterm, shortterm, and longterm memory. You can use it to learn all the things you never want to forget any more, like vocabulary, capitals, and important dates.
Navlet is a navigation system for mobile devices such as PDAs, smart phones, and cell phones. It retrieves positioning data from any NMEA capable GPS receiver and displays the position on a digital map. External GPS receivers can be connected via a serial cable or Bluetooth. If your mobile device is connected to the Internet, it can download maps from a map server, or alternative use locally stored maps. It is also able to send the GPS data to a server via an HTTP connection.
UnitConverter MIDlet provides easy unit conversion (length, volumes, etc.) on Nokia Series 40 mobile phones primarily, but is compatible with any J2ME CLCD-1.0 (or higher) device (basically all modern phones). It was developed using Nokia J2ME development tools together with Eclipse. Currently, only the Nokia Series 40 quick-access keys and 128x128 pixel display are supported; on other devices some keys may be cumbersome to access and the display layout look weird, but the software should work on most devices out there.