Greasy Fork is available in English.
Duolingo PRO
The fastest Duolingo XP gainer, working as of March 2025.
Review: OK - script works, but has bugs
The script does not work using Violentmonkey, either.
If you are using preview.duolingo.com, some changes Duolingo has made might break Duolingo Pro. Please updating to 9.6.6 which should have some fixes
The "Solve" and "Solve All" buttons do not appear during lessons. I am using Tampermonkey.