Firefox

For what it's worth, being a professional software engineer, I expected that list to be at least a magnitude longer. I guess, it doesn't include all their internal projects. But yeah, you would not believe how much shit we throw at the wall and how little of it sticks, particularly not for more than a few years.

I once heard the figure that IT investors expect 1 out of 20 investments to pay out, which feels about right to me...