Unlike the Muon build, Brave Core offers support for all extensions supported by Chromium. They can be downloaded and installed as they are in any Chromium based browser. Links to the install pages for the extensions that were included in Brave Muon can be found here:

• 1 Password Extension

Note: 1 Password v6 is no longer supported on Chromium platforms. You must be using 1Password 7 or higher to install in Brave.

• Bitwarden Extension
• Dashlane Extension
• Honey Extension
• LastPass Extension
• Save to Pocket Extension
• MetaMask Extension

Note: Users who use the extension are highly encouraged to back-up their vault data and restore it in Brave Core.

Both Webtorrent and PDFJS extensions are already built into Brave Core and do not need to be reinstalled.

For a more comprehensive guide on adding extensions, visit the article here.