Trustless TEE: List of Open PDKs

Skywater 130 Welcome to SkyWater SKY130 PDK’s documentation! — SkyWater SKY130 PDK 0.0.0-369-g7198cf6 documentation
Globalfoundries GF180 Welcome to GlobalFoundries 0.18UM 3.3V/(5V)6V MCU PDK’s documentation! — GlobalFoundries GF180MCU PDK 0.0.0-111-gde3240d documentation
IHP GitHub - IHP-GmbH/IHP-Open-PDK: 130nm BiCMOS Open Source PDK, dedicated for Analog, Mixed Signal and RF Design
MinimalFab: Minimal Fab PDK Open
SiEPIC Ebeam PDK: ubcpdk (SiEPIC Ebeam PDK) 2.7.0 — ubc
VTT: GitHub - gdsfactory/vtt: Open source Photonics PDK for VTT's 3 um SOI platform.
Libresilicon 1um Libre Silicon

(thanks @troglobyte)