Can I run tests written Robot Framework in Browserstack for automated testing?
If BrowserStack does not support it which framework supports it?
Also, I am wondering whether other frameworks support Robot with Appium or not.
Yes, you can use Robot Framework with Appium on BrowserStack's Automate as well as for App Automate on real devices.
For reference and walkthrough guide, please refer to the documentation here:
Hope this helps.
Regards, BrowserStack Support