Hi, I learned about Mozzarella from social media, so I missed the official announcement of how it is curated, i.e. automatically or manually added entries. Either way, I spotted ff2mpv being listed although it is published under a non-free license: https://raw.githubusercontent.com/woodruffw/ff2mpv/master/LICENSE The Firefox add-on page still shows the original Expat license though, so Mozzarella inherit this metadata. I think cases like this are rare enough to not demand a web UI to report extensions add-ons accidentally listed on Mozzarella, but there should be a mechanism to manually remove it from the repository to avoid misleading users into installing proprietary software. BTW all Mozzarella pages have an empty , which makes it difficult to browse multiple extensions in different tabs/windows. Kind regards, Phong