Was a huge disappointment when google made a decision to close it. I remember lots of services appeared pick up the audience. I switched to BazQux back then and still using it (bought lifetime license after several years and enjoying it every day).
You probably has monitors with native thunderbolt input? They are not that many such monitor exists. Without MST you are out of luck to do thing with Display Port (via DP, mDP or USB-C), and this is what majority of monitors on market has.