1. Multicast White Board This is a free clone of wb, a multicast white board application. It allows you to share a virtual white board with other people running wbd over the Mbone (multicast backbone of the Internet). You can paint, write and import text and graphics. You will need a multicast router and a connection to the Mbone if you want to share your white board with people outside of your local subnet. From Debian 3.0r0 APT