Workona's extension turns your browser windows into "smart windows" (workspaces) that remember the tabs you open in them. This allows you to shut a project and pick up right where you left off later.
Your workspaces will help you split up your 477 open tabs into the 70 projects, topics and ideas you talked about. Workona also lets you "switch to these groups in your workflow" seamlessly so you can focus on one thing at a time. Soon workspaces will be sharable and even have URLs that can be used to access them, which will open the set of tabs in their own window. To ensure workspaces open quickly, we prevent the tabs from loading the content until you click on them.
We haven't officially launched yet, but we recently opened up the beta if you want to try it out (only Chrome for now, but support for Firefox coming soon). We'd love to hear your thoughts: https://workona.com