GTD Brain by Minosin

GTD Brain is a Getting Things Done board: Inbox, Next Actions, Projects, Waiting For and Someday/Maybe. This add-on is its capture surface for Firefox.

Click the toolbar button and the cursor is already in the capture field. Type a thought and press Enter — it lands at the top of your Inbox. The page you're on is attached by default (title and link), and any text you've selected arrives as a quote, so a web page becomes a next action without copying and pasting.

Below the capture field you see the top of your Inbox, your Next Actions with their context, and your Projects with their pinned next action. Everything there is read-only: clarifying, doing and editing happen on the dashboard, one click away. Open the sidebar (the "Sidebar" link in the popup, or View → Sidebar → GTD Brain) to keep the same view next to the page while you read.

Sign in with the email you use on the dashboard; a one-time code is sent to it. No password.

Requires a GTD Brain account (free to start): https://gtdbrain.com/gtd-ai?source=firefox-addons