There are a couple Airbus projects to keep an eye on like the A320neo, A380, A220 and A350. Though it is uncertain if any of these will make it to the finish line (except the FBW A320neo obviously).
Is there any freeware Boeing 737 in development with a similar level of detail and accuracy? Preferably the Next Gen or Classic, but I guess I shouldn’t be too picky. 
Or any other Boeing aircraft?
Two options that I’m aware of:
Haven’t flown them myself, but general feedback is decent I think?
Oh yeah, I knew about the 747 and 787 updgrades too, thanks for reminding me. 
I was kinda hoping for a short haul Boeing.
I’m not sure why so many people are taking on Airbus projects, while Boeing is left alone?
Qbit is making a freeware Boeing 737-800 which is looking good! Good option if you don’t want to pay for the pmdg 737.
Thanks I’ll keep an eye on it 
(if only PMDG aircraft didn’t cost an arm and a leg 
)
There are a couple of FSX conversions on flightsim.to website , Boeing 73X by flightmann100 and another by Alec , Thanks
Hi, I went to the site you referred me to, I registered there, but I can’t find something to convert
thank you.
Hello The 737 should be under aircraft , airlines, it is called Project 73X download the stable version and drag and drop into community folder .
thanks
Hello, thanks for answering me, where can I find Project 73X? would it be here on the forum?
Your welcome- The 73X is on Flightsim.to website , Aircraft, Airline Aviation this is link to aircraft B73X Project (Boeing 737-800) » Microsoft Flight Simulator (copy to browser and it should work )
thanks have a great day
when i do it it comes out as a ptp file and i dont know why it dowsn,t work