Chrome addon that automatically switches proxies?

Hello everyone, I'm looking for chrome..or even firefox addon that can do one very simple thing. I load in list of proxies and it than automatically for example every 20 minutes changes to another proxy in the list. Checked few proxy addons, but did not find any that could do this. Thanks for any help.

Proxy Tool for Firefox will rotate with every new tab. May not be what you're looking for ~ but it's one I know about and it works well.

The add-on: https://addons.mozilla.org/en-US/firefox/addon/proxy-tool/

The website: http://proxylist.co

Good luck!

For Firefox, try Elite proxy switcher
https://addons.mozilla.org/en-US/firefox/addon/elite-proxy-switcher/

For Google Chrome, try Proxy Switchy
https://chrome.google.com/webstore/detail/caehdcpeofiiigpdhbabniblemipncjj

Hope this helps