Longtime users of Google Chrome may remember a period when it was possible to display tabs vertically, in a bar on the left-hand side of the screen, rather than at the top above the address bar. That feature (pictured above) was experimental, and the Chromium team, which creates public forks of the source code behind Google's commercial browser, eventually gave up on the idea because it was believed to be a niche feature and "nobody stepped forward to do the work to drive the feature to completion." Sidebars may be coming back from the dead in a different but similar form, however.
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