"Thanks to the internet we can easily communicate with one another in real-time. This is mostly done via messenger applications, like Yahoo! Messenger or Windows Live Messenger. But what if you do not have access to the internet? What if all you have is a local network, with limited or restricted access to the internet? How do you communicate with others on the network in real-time?
Why you use the right piece of software of course. And the right piece of software in this situation is the B Labs Software-developed Bopup Messenger. This application, as its name so adequately points out, is a messenger. Unlike Yahoo! Messenger for example, it doesn’t need an internet connection; it works over the local network, making it a good choice for office environments where people need to communicate but don’t necessarily need access to the internet."
Read a good written review of Bopup Messenger product at bopup-messenger.findmysoft.com/review/