Micro-blogging software used at intranet, and open-sourced, with file attachment

Question

Our company wants to build a message-sharing system in intranet, like twitter or facebook but with file attachment in order to share messages or files quickly.

I have surveyed some micro-blogging systems like below:

• Google Wave (discontinued)
• Sharetronix (not free for enterprise use)
• wordpress + p2 theme (not easy for user management)

Because that the sharing messages do not very important for our business, we would like to build it like twitter, not forum-like systems. Besides, if using CMS like Drupal or joomla, it's much fat for our purpose.

Is there any suggestion about this?

Thanks a lot.

Answer 1

To add to @darkphoenix, status.net now allows for attachments and whatnot: http://status.net/wiki/Attachments

I'm not sure what the real goal of this might be, but some chat programs would allow for file transfers. Would be fairly light-weight, I imagine, but I have not looked into them.

Answer 2

maybe a spin on StatusNet might help solve your problem. I mention "spin" (read: modification) because you mentioned files.