Plainview, a sexy presentation browser
I love this kind of software: do one thing, and do it beautifully and effectively. There are many times that I would love to have had Plainview in the past.
This is 1.0 software but there are actually very few features that I want added. They would include:
Keyboard shortcuts for everything: this is possible because there are so few commands (intentionally) and is important because the mouse can be distracting. When giving a presentation I want to be able to do everything possible with the keyboard.
Ability to turn off plugins and JavaScript: in giving a presentation I often want to demonstrate how the site functions with and without these features.