managing Wifi services

Is there a good Debian package for managing Wifi access? Adding an entry to /etc/network/interfaces is OK if you only have one ESSID. But if you are going to connect to one of several phones, a home Wifi, McDonalds, and others then it becomes tiring to edit that file. I'd like something that allows a laptop to do the same things as an Android phone. To just automatically connect to a Wifi network that's in range. Ideally it would do it whenever there's no link on the Ethernet port. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/