FF frequent-users of Wayback may want to add the Wayback Machine add-on to their toolbar. Along with 'first','recent' and 'overview' selections it includes 'Save Page Now', as well as related Alexa, Whois and Twitter connects.
I see that it's licensed under the GPLv3, but where's the source?
EDIT: Maybe it's this one[1], but it's under a different license, AGPLv3. The repo also hasn't been updated since 2016, but the extension page says last update was in 2018. Are the changes and re-licensed source elsewhere?
https://addons.mozilla.org/en-US/firefox/addon/wayback-machi...