anyone knows what is the best software to manage photos?

hi.. i have lots of pictures that i wanted to manage with. if can, i want to manage it and be able to preview them in web based browser with not much effort. i've tried Pica Jet. The only thing that i dislike is the photo gallery. They should insert some smooth transition to the photo gallery template so that when we switch to the next photo, the changing of the photos would look more interesting like "slideshow". Any opinion for software that are able to do that?TQ.