Mozilla today released Firefox 45, fulfilling a promise to drop the browser’s Tab Groups feature.

Tab Groups, formerly Panorama, lets Firefox users organize multiple websites — illustrated as open tabs — within sets, then quickly access those URLs in a visual interface. Mozilla debuted Panorama in Firefox 4, which shipped nearly five years ago.

Earlier, Mozilla said it was dropping Tab Groups because few were using the tool. The open-source developer reiterated that Tuesday.

“We’re always looking for new ways to improve Firefox. Part of that process sometimes means that we need to remove features that aren’t used very much or support for platforms that are going away,” Mozilla said in a company blog. “This lets us concentrate our resources on finding new ways to delight Firefox users.”

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