4
[quote]
It's for website and Extranet/Intranet. Tikiwiki seems best for wiki and blog system ? There is also one system of "abstraction" for database, so they can to use postgre, mysql, oracle easily.
/quote]I don't know TikiWiki, but features are only useful, if you plan to use them.
If you plan to use a MySQL database, it doesn't matter whether the system can support 5 other databases.