Looks like the developers have been busy over at Malwarebytes.
The browser protection extensions that have been in Beta have now been renamed to "Malwarebytes Browser Guard", given a new user interface (yes the controversial robot does appear), and fully released to the public.
If you are already using the beta version it should update automatically to the fully released version.
The fully released extension remains entirely FREE.
Two versions are available - Chrome, (also covers Edge Beta, and Vivaldi), and Firefox.
The Browser Guard extensions can be found here: https://www.malwarebytes.com/browserguard/
The User Guide can be found here: https://support.malwarebytes.com/docs/DOC-3446
The discussion forum(s), for feedback or questions, can be found here: https://forums.malwarebytes.com/forum/252-malwarebytes-browser-guard/