linux wireless utilities

i spend a fair amount of time thinking about ap radar. os x has the toolbar pulldown from the top to show APs in range. Windows has an AP lister with a double click on the toolbar and maybe one other button push. what do the major linux distros have for a wireless client utility? i mean ap radar is just a slight more than a proof of concept. ive seen a gnome wireless strength meter but AFAIK its not an AP lister/chooser.