what do you want to store? who's gonna use it? why not use a wiki? if it's about collaborative working on a long text: perhaps plain text-files and a version c

what do you want to store? who's gonna use it? why not use a wiki? if it's about collaborative working on a long text: perhaps plain text-files and a version control system like git is the way to go? if you want to discuss about a medium-length text, you could use a etherpad. http://etherpad.org/ http://etherpad.org/ - example: http://piratenpad.de/p/hackernews http://piratenpad.de/p/hackernews