The integrated modular avionics concept (IMA) was developed by Boeing for its B777. Open IMA is an improved version developed by Airbus starting from A380. Which are the differences? For example, I got that the network is optical fiber for IMA and Ethernet/Avionics Full-Duplex Switched Ethernet (AFDX) for Open Ima: why?
I know that the question may be too broad and not very easy, so I would welcome even some links to deepen the argument.
Moreover I would like to understand: where is it used IMA nowadays? Only in B777, or even in B787 and new generation B747 and so on? Idem regarding Open IMA: only A380 or even in the A329 Neo?
If Boeing and Airbus have these new systems, what do you have in all other companies? Embraer, Eurocopter, Tupolev etc.