Logseq Quick Capture v0.2.4
Logseq is an open-source note-taking app (www.logseq.com). This extension allows you to do a quick capture of the web-page that you are currently at and send it immediately to your open Logseq graph.
It captures the URL and title of the page; and if you've made a selection, it would capture that as well.
(Logseq v0.8.12 onwards):
You can customise your quick capture preferences by using the extension options page.
Github: https://github.com/hkgnp/firefox-extension-logseq-quickcapture