Chaskiq is a 100% open source conversational marketing platform build as an alternative for Intercom, Drift, and others, currently under active development.
Chaskiq is a platform that enables chat comunication with users in app or via campaigns (in app messages or newsletters). The platform is a Ruby on Rails app serving a graphql API which is consumed by a React application. It has minimal dependences , Postgres & Redis and interoperates with cdn providers like Amazon s3 and Amazon SES for email delivery. You can use other providers too.