Tabalanche

Tabalanche is an extension that lets you stash away tabs for pages you don't need right now, so you can focus on what matters and get back to the rest later. For power users, Tabalanche is designed to stay quick, smooth, and easy to use, no matter how much you throw at it. Unlike other extensions built for managing tabs that creak and moan after a few months of heavy use, Tabalanche performs as quick as it was on day one, even after years of stashing away hundreds of tabs a week. Tabalanche is entirely human-authored, open-source software, with no ads, tracking, or in-app purchases of any kind.