Below are the links to the IBM pages that list the end of life/end of support dates for Gentran, Sterling B2B Integrator and Sterling File Gateway. I was unable to get the specific pages for DataStage, Transformation Extender, Sterling Connect:Direct, Sterling Control Center, and Sterling Secure Proxy, but there is a software lifecycle search portal that allows you to enter the product name and it will list all the versions with their end of support date, which I have linked to below.