Source code access
The latest Arabica source code is also available from GitHub, and I would recommend you grab the source from there. Forks and patches are welcome.
Source packages are also available from SourceForge, although they tend to lag behind rather. The most recent release was on 24 October 2010.
If you would like to be informed about new Arabica releases, join the arabica-announce mailing list.
Please be sure to read the build notes after you have downloaded the source.