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TabMerger
TabMerger is a cross-browser extension that stores your tabs in a single place to save memory usage and increase your productivity.
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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
I’d recommend this newly developed extension called TabMerger over OneTab for two reasons, the first being that there are a few additional features like cloud sync. More importantly though, there are significant privacy concerns with OneTab; using the “Share as web page” function can allow your saved tabs to be publically available for viewing on Google. See here for more info