Some open-source projects have a certain perverse economic madness about them. For example, as I wrote about last month, you can use $600–$700 US worth of hardware and MythTV to re-create the TiVo box ...

So, you need to deploy a Private Branch eXchange (PBX) system for your small office. Or, maybe you want a voice-mail system running on your Linux box at home. What about an interactive voice response ...