9 articles, every claim sourced
An extension is the most privileged thing you install in a browser and the least examined. The useful skill is not finding good extensions; it is reading a permission list and a privacy declaration well enough to reject the bad ones yourself.
START HEREBrowser Extensions That Keep Your Data On Your Machine- it shows how to verify a local-storage claim rather than trusting one.
Manifest V3 changed which extensions can exist at all. Several roundups still recommend tools that no longer run on Chrome, and ours did too until we checked every entry against its store listing.
Both promise to fix a full tab strip on Firefox, and they do it in opposite ways. OneTab closes every tab and replaces them with a list. Simple Tab Groups keeps every tab running and hides the ones you are not using, through a Firefox-only API Chrome does not have. Compared on memory, switching windows, and what survives a browser restart.
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Both take a snapshot of every open window so a crash cannot cost you your tabs. Session Buddy is a polished, Chrome-only, closed app with a million users. Tab Session Manager is open source, runs on Firefox and Edge too, lets you set the auto-save interval, and can sync through your own Google Drive. Compared on storage, automation, what you can read, and how each one came through the Manifest V3 cutover.
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Manifest V3 is three changes, not a hundred. Background pages became service workers that sleep after thirty seconds. The blocking network API became a rules list with a fixed ceiling, which is why the full uBlock Origin no longer runs on Chrome. And extensions can no longer load code from the web. Here is which of your extensions each change touches, and what Firefox, Brave and Edge decided to do instead.
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Chrome shows you warnings, not permissions, and the two are different lists. More than forty permissions produce no line at all, one permission can hide another's line entirely, and the most alarming sentence in the box usually comes from the most ordinary thing an extension can ask for. Including our own extension's list, where eight of the thirteen permissions never reach the box.
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A tab manager saves and restores your open tabs so you can close them without losing anything. Here are the four categories that exist, what each one is actually for, and how to choose without installing five of them first.
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Six tab managers compared on what actually matters: where your data lives, whether an account is required, how you get your tabs back out, and who each one suits. Including where OneTab is still the right answer.
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Toby turns tabs into a visual workspace. OneTab crushes them into a list. Compared on data model, sync, privacy, speed, pricing and data loss risk, including where we tell you to use Toby instead of our own extension.
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How to tell whether an extension actually stores your data locally, which permissions deserve a second look, and what the store listings do and do not tell you.
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Eleven extensions checked against their live store listings in August 2026, with the browsers each one actually runs on. Including which ad blocker works on Chrome now that uBlock Origin cannot, and which entry on this list went paid-only in March.
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