Sketch-A-Etch is a simple drawing application for Android.

http://code.google.com/p/sketch-a-etch/

Titlebar adds a backbutton to Android’s titlebar (just like the iPhone).

http://code.google.com/p/android-titlebar/

TinyURL integration for the Android platform.

Features:

Create and share a TinyURL
Convert a URL to a TinyURL before sharing it from the Browser, YouTube, or any other application that supports sharing links
Copy TinyURL to clipboard

http://code.google.com/p/android-tinyurl/

Android instrumentations are powerful tools for automating android applications and make a nice fit for automated acceptance testing.

Positron provides an instrumentation and some support classes to help writing acceptance tests. It is provided as a jar that gets bundled with your application. Acceptance tests are written in junit, extending a custom base class.

http://code.google.com/p/autoandroid/

Android jChat is a Location Based Chat application that provides a good example of peer-to peer application aimed at proving the power of adding JADE ( http://jade.tilab.com ) agent capabilities to the ANDROID Platform.

JADE introduces the concept of agent oriented development and this application demonstrates the flexibility of this approach, that it is easily applied to a common p2p environment as in a chat application.

http://code.google.com/p/jchat4android/

ProxySetting is a simple application for Google’s Android platform that allows users to specify an HTTP Proxy address to use when connected to a Wifi network.

At the time of writing Android only allows HTTP traffic to be directed at a proxy when using a Mobile network. It is likely that Android will be updated in the future to support the use of Proxies on Wifi networks, but for now this application aims to solve the problem.

http://code.google.com/p/proxysetting/

The Android Mono project allows you to run .NET applications on the Android platform!

http://code.google.com/p/androidmono/

An Android application that intercepts incoming text messages and displays them in a popup window (activity). The popup window shows the contact the message came from and their contact photo (if there is one) as well as the content of the message. Directly from the popup the user is given the option to Close the popup (marking the message read) or Reply to the message (using a system intent).

The more recent versions of SMS Popup also have a full notifications system built in – this allows a user to disable the built in messaging app notifications and use those from SMS Popup. The notifications system has additional options such as custom vibrate pattern, custom LED color and the ability to remind the user of a missed message in case they missed the notification the first time it played.

http://code.google.com/p/android-smspopup/

BistroMath is a specialized calculator for solving “bistromatic” problems which involve numbers on a a waiters check-pad and people in restaurants.

Given the amount on the bill, we can quickly calculate tax, tip, how to divide equally among N people or convert into another currency.

http://code.google.com/p/android-labs/

Countdown Alarm++ application for the Android mobile OS.

http://code.google.com/p/android-countdownalarm/