Current release of greenDAO on githubs’ Downloads page
Previous version: V1.0.1
The starter package includes jars for greenDAO and its generator, JavaDoc documentation, and an example project.
After download, please have a look on how to get started and the documentation in general.
Open source
greenDAO is completely open source: check out greenDAO at github.
Even if you do not plan to work with greenDAO’s code, it’s recommended to have a look at the source version. For example, it comes with a test project (DaoTest), which makes use of all available greenDAO features. Thus, it’s a good place to see how greenDAO is used. Also, source code is the better documentation, right? 
