Are you interested in an open source tool that helps you build your CI/CD pipeline manifest (usually a yaml file) with predefined templates?
For example you want a .gitlab-ci.yaml all you do is just drag and drop (or use cli) templates that grow everyday and just pass few parameters and you get the yaml file. (You don't need to even know how to organise the jobs in the pipeline, the tool will guide you)
It can support Gitlab, Github actions, Jenkins, CircleCI, etc.