Anything else like Tabzon.com?

I'm looking at web apps (Free) that we can use in our office and while working remotely to track who is where.

Basically a sort of check-in board.

Best so far looks to be tabzon.com

Any other suggestions?

From web app Jamik

• We use Spark + Openfire. It's main purpose is instant messaging, but you can also send message to people who are offline, and you can set an offline message when you log off (same as checking out).

  There's a SparkWeb plugin that provides a web-based client so end users don't have to install anything if they don't want to.

  From bemace