group collaboration open source php app

Question

I am on a committee that would benefit from an online application that allows the members to collaborate w/ members.

I would want the ability to post messages and upload documents.

Is there any free, easy to install on your server apps that you would suggest?

Answer 1

With such broad requirements there are going to be 1000's of packages to choose from. Something like TikiWiki would probably do the job (it might even be overkill depending on your needs).

Answer 2

If you really want something similar to BaseCamp, you should try out ProjectPier.

If you think you'll need more community features than a project management tool can offer, I would suggest jumping into Drupal.