Research Notes is a free Chrome extension, that let's users bookmark, tag or add notes to pages, highlight and save quotes or images, save selected Google searches.
We have lots of ideas how to develop Research Notes further, including:
better presentation of added comments and quotes,
syncing data between different devices.
And you are always welcome to send us more ideas to add to the roadmap!
See what we've built so far at https://onlineresearchnotes.com