FredBezies [1] filed a deletion request for firefox-pass-manager [2]: https://github.com/gekmihesg/pass-manager "Not supported any more! This addon heavily relies on legacy features, which will no longer be supported by Firefox 57+ and there doesn't seem to be a way to port the functionality to WebExtensions. There is a final, untested build which might still work with Firefox 56." [1] https://aur.archlinux.org/account/FredBezies/ [2] https://aur.archlinux.org/pkgbase/firefox-pass-manager/