There are a few Steam SSO plugins, and I bet nodebb-plugin-sso-steam-v2-thetown isn't the one @julian was referring to.
Magento SSO Login
Has anyone ever developed a plugin to allow SSO with a Magento store?
We'd like to be able to have people use their existing login in our Magento store to login to NodeBB, but we are not too excited to develop it ourselves. Just curious if someone has implemented this before or would be interested in developing one.