- Clicky: Tracks users. I think this is more than we need
- Marker.to: A web browser extension that lets you highlight and share text.
- Diigo: Tool bar for Internet Explorer or Firefox which lets you take notes and highlight
- Scrible: Note taking extension for Firefox and Chrome
A lot of text-to-speech engines are made for Webkit and thus won't work in Chrome. Viable options include:
- meSpeak.js
- Google's text-to-speech