Selenium & Appium creator here. I'm kinda jumping up and down at how awesome this demo is. While browser automation with puppeteer would be cool... I see in your docs that you also support running a remote Android emulator. As someone who spends a lot of time in the test automation space, there is a ton of potential here for mobile test automation (spinning up all kinds of different configs). So here's a vote for using the W3C WebDriver spec [1] if you support an automation API -- then you'll get desktop browser /and/ mobile device automation in the same API.. and it's the W3C standard. :-)