Open Source PDKs This repository contains pointers to open source PDKs maintained by Google. Foundries SkyWater Technologies SKY130 https://github.com/google/skywater-pdk SKY90FD (work in progress) https://github.com/google/sky90fd-pdk GlobalFoundries https://github.com/google/globalfoundries-pdks GF180MCU https://github.com/google/gf180mcu-pdk