GitHub Actions can use windows and mac for ci container so I think, "IE11 and Safari work on CI?". Speaking from conclusion, it works! I succeeded to run windows/ie11 mac/safari windows/chrome windows/firefox on GitHub Actions. My working example is here. https://github.com/mizchi/frontend-gh-action-playground Setup I use node.js selenium-webdriver and jest(-ts). // e2e/runWithSelenium.ts import w