Hello everybody, Can anybody give me some resources so I can design a transistor array by using open sources? I am new to this tool and couldn't figure it out completely. I appreciate your time.

A list of all the basic tools needed for transistor design can be found here. https://platform.efabless.com/design_catalog/tools

Hi David, thank you for your reply. can I get a session with you to understand about this tools.

I don't know that I can help a lot. Read through the catalog pages and then the resources referenced by them. If you are designing transistors your flow should be Design -> schematic capture (Xschem) -> simulation (Xyce or Ngspice) -> layout/DRC (Magic or Klayout) -> extraction (Magic) -> Extracted netlist LVS (netgen) -> simulation (Xyce or Ngspice)