Docmost is an open-source collaborative wiki and documentation software. It is an open-source alternative to Confluence and Notion.
55nm CMOS Open Source PDK for Digital, Analog, and Mixed-Signal Circuit Design. It supports an open-source RTL2GDS workflow for education, research, and silicon prototyping.
130nm BiCMOS Open Source PDK, dedicated for Analog, Mixed Signal and RF Design. Documentation is here:
Modular hardware build system