I used Crimson Editor before I found Notepad++ and I can’t believe it’s been that long. Cheers to 20 years!

• MarkDownload is wonderful
• FoxyGestures: Pull left to go back, scribble ‘Z’ to close a tab
• Omnivore: Read stuff later
• CORS Everywhere
• Tab Containers
• Container Proxy (I could never get the built-in Tab Container function to work, this just lets me set certain tabs to hit the proxy)
• uBlock Origin, naturally