2 of my projects were approved for experimental chip production by #efabless using GF180MCU process: https://platform.efabless.com/shuttles/GFMPW-0/ :)

1) https://foss-eda-tools.googlesource.com/third_party/shuttle/gf180mcu/mpw-000/slot-025/

2) https://foss-eda-tools.googlesource.com/third_party/shuttle/gf180mcu/mpw-000/slot-026/

For both of them I used https://wokwi.com and special #GitHub repo prepared by Proppy

Using https://github.com/proppy/tiny_user_project I was able to submit small #Wokwi design to new GF180 shuttle by #efabless https://platform.efabless.com/shuttles/GFMPW-0/