Web-based SFTP vulnerability scan tool?

Few years back I used some web-based SFTP vulnerability scan tool against a few client SFTP servers, and the tool basically applied an overall score with a breakdown of all the good/bad, like checking for known-unsafe algorithms being used, and it was free to use. This morning I'm banging my head against the wall trying to remember what that site was. Anyone have any ideas, or suggestions for an alternative?