QuickNotes Plus by R Nichols

QuickNotes Pro gives you a persistent notepad that remembers what you wrote on each website. Switch to "Global" mode for a single note accessible everywhere, or stay in "This Site" mode to keep notes scoped to the current domain.
📌 Per-site and global note modes
💾 Auto-saves as you type — no save button needed
🔢 Live character counter
🗂️ "All Notes" view to browse and delete saved notes across every site
⚡ Lightweight — no external servers, all data stored locally in your browser
Perfect for saving research snippets, login hints, to-do items, or anything else you want to remember while browsing.