I've done a ton of selenium, appium and winappdriver (kinda like selenium) in Java, C# and python, as a contractor at at least 7 different companies. Every comp

I've done a ton of selenium, appium and winappdriver (kinda like selenium) in Java, C# and python, as a contractor at at least 7 different companies. Every company experienced these issues. Selenium is great. It really is. But the level of flaky tests that generally get produced is just so painful. And as you say, getting it to run in Firefox - that's not been too bad, but any other browser as well was a pipe(line) dream. IEDriver last time I tried to use it with Grid only allowed one instance anyway, so couldn't run multiple on one machine. UIPath, AutomationAnywhere and these other 'no code required but we have a place you can write code in case' tools - I'm looking forward to seeing how they deal with these sorts of problems. When you're scraping data off a dynamically loading page, or is time dependent, it's not trivial. Even with implicit waits, retries and other 'tricks' as someone described further down, it's frustratingly difficult at times to just do a single action in an app/page. And then you hit shadow dom websites, or Windows apps that create new windows (not child popups) for every screen/dialog box. The joy :) Still, I find it an enjoyable, if frustrating challenge.