Reviews a number of different tools to test browser compatibility across a tonne of different browsers. Some are web-based, others are are installed locally.
As Lincoln said, better to keep silent and be thought a fool, than speak up and remove all doubt. And so, in the end, 99 times out of 100, we choose silence
When we are silent, we are hurting the outcome
This is the problem" which can risk looking the fool and quite possibly pissing someone off, ask this: "Could it be ...that this is the problem?"
"Could it be" is a conversation starter, rather than an assertion