I'm surprised no one has mentioned Adobe Acrobat here; maybe techies view/edit their pdfs in ed. I have to admit that I don't use it every day--I have PDF-XCha

I'm surprised no one has mentioned Adobe Acrobat here; maybe techies view/edit their pdfs in ed. I have to admit that I don't use it every day--I have PDF-XChange Editor on my home computer (and a couple other PDF viewers), but when I do have to use it, I hate it. The UI has gone through lots of changes in the past few years, and each time it's worse. Most everything is icon-based--tsort of like Microsoft's Ribbon, except these icons are randomly displayed above, or to one side of, the doc you're working with, leaving little room for that doc to be displayed. You can get a menu, but its primary use seems to be to bring up rows or columns of icons. And the icons are both large and ugly (and often indecipherable).