The following are good Android open-source projects collected in my daily work. You are welcome to provide unrecorded websites.
Roottools:
RootTools gives Rooted developers easy access to common rooted tools...
Mmsbg:
Mms bg for auto send msg and auto dial
Acra:
Application Crash Report for Android
Android4me:
J2_port of Google's Android
J2me2ab:
A simple j2-to Android Bridge
Meteoroid:
Create the project to help Java ME developers to convert their projects to Android smoothly
Simple:
Simple Compiler And Runtime
Android-serialport-api:
Accessing serial ports for Android
Zxing:
Multi-format 1D/2D barcode image processing library with clients for Android, Java
Alogcat:
Android Log Viewer (logcat) Application
Android-scripting:
Scripting Layer for Android brings scripting versions to Android.
Bugsense:
Defining Mobile App Quality
Su-binary:
Su binary for android Superuser
Dexmaker:
Programmatic code generation for Android.
Androrat:
Remote Administration Tool for Android devices
Android-aspectj:
Example of AspectJ Method Tracing on Android
Libandroidinjector:
Android Injector Library
Ad-away:
AdAway-Open source ad blocker for Android
FScript:
FScript is an simple, though powerful scripting language. Its intended use is as an embedded language in other Java programs