There is a suspicion that all of this can be raised on the same Joomla, for example...
Design template to choose on the taste and finished.
Authorization is LDAP.
The polls there.
Wiki is not checked, but seen.
Project management Projectfork (he use)
It features discussion.
Redmine is not seen as a module, but can be put next to
Newsletters and announcements — all sorts.
LAMP, open source...