well, salomon and Look have different charts. But the results are normally close, like within .5 din. Keep in mind that Look, Rossignol and Dynastar are all owned by Quiksilver so they have the exact same bindings.
Atomic has crazy ass bindings but I can't remeber if they have their own chart, I think they might use the look din chart.
And as for Marker or any others, I have no idea.
If you're setting your friends bindings be careful. It's not hard to get certified and learn how to properly set bindings. But there's a little more to it than simply lining up the boot with the bindings and reading the chart. You need to be aware of the visual indicators on the bindings, which are hard to find or read, just every model has a different style of doing it.