Well that's not an Android app, but that's about Android apps ! And open source ones !
10 years after http://www.palmopensource.com, the directory of open source applications for webos/palmos, I decided to start Aopensource.com, which is a directory of open source apps for Android and Android programming links.
Of course, I've added Anddev.org to the directory: http://www.aopensource.com/index.php?category=26
So if you have developed an open source application for Android, please submit your links (even if it's not in Android's Market). You can also post here the packages names (i.e. com.android.aConverter) and I'll add them quickly to the directory.
Many thanks in advance for your contributions !