Need your suggestion on open source software - kind of Facebook/quora

[nagarch]

Hello,

I want an application / software with below functions.

1. It should have facebook pages( Brands/companies can register) and likes 2. User registration 3. Commentin 4. Connect users with each other?

do you know any application

[smegel]

What does Facebook itself not do that this hypothetical software would?

[nagarch]

I dont want to use facebook. I need this for some intranet purpose