Some Corpora and databases
(more information under The BLARK for Arabic)
(more information under The BLARK for Arabic)
- Corpora of the United Nations (for the research purposes)
 - GALE Phase 1 Arabic Newsgroup Parallel Text - Part 1
 - GALE Phase 1 Arabic Newsgroup Parallel Text - Part 2
 - Latifa Al-Sulaiti's Arabic Corpus
(- and ebooks about corpus linguistics gathered by Diaa Fayed)
See also Latifa Al-Sulaiti's own homepage
And his list of Arabic corpora 
source: http://www.medar.info/index.php