What technology is indispensable to me as a genealogist and family historian? Well, don't expect any big surprises here--my indispensable choices are rather pedestrian.
Hardware: My 2GB thumb drive is invaluable. It makes my data portable and it's a decent backup.
Software: Okay, I know I'll seem like a caveman, but for me it's got to be PAF 5.2. I've also got the latest iteration of RootsMagic, but I started with PAF and it's still like a companion you grow especially fond of.
Website: Although I subscribe to a number of commercial sites and regularly visit many excellent non-pay sites, there's nothing like Google, with all its accessories like Google Books, Google Scholar, and so forth. I've broken through several brickwalls with Google's help when the commercial sites yielded nothing! I've just fallen in love with Google StreetView!