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Session Alive is designed to keep website sessions active and reduce timeout messages.

Broken Link Checker scans links on the active webpage and checks whether they are broken or redirected.

Users can store and organize bookmarks with GGather, keeping sharing optional for saved collections.

Save a complete web page as a single HTML file with SingleFile, a browser extension for keeping a copy of the page.

Automatically close unused tabs with Tab Wrangler, a browser extension intended to keep attention on the tabs currently in use.

Popup Tab Switcher helps users switch between tabs and remembers the order in which tabs were active.

Add subtitles to online videos with Substital, a browser extension designed for that purpose.

Linksort helps users save and organize links, with a browser extension for one-click bookmarking.

Block pop-ups, overlays, cookie notices, and ad-block warnings with the open-source PopUpOFF browser extension.

MONKNOW combines favorite sites, search, weather, to-dos, and wallpapers in a customizable new-tab browser extension.

Stylus restyles websites through a browser extension forked from Stylish; its description says the fork removed analytics from the earlier codebase.

Complexity is a browser extension that adds model selection and other controls to Perplexity.ai.

WebExtension.org provides hosting and services for browser extension developers and is migrating from add0n.com.

AutoPagerize automatically loads successive pages on supported websites through a browser extension.

Darken websites or dim video backgrounds with Turn Off the Lights, an open-source browser extension.

Build a custom new-tab page with Anori, a browser extension offering folders, color schemes, and widgets such as tasks, notes, and weather.

Customize the new-tab page with Mue, an open-source browser extension offering backgrounds, quotes, and widgets.

Discover and share userscripts through ScriptCat, which pairs its script site with an extension compatible with Tampermonkey scripts.

Color Temperature adjusts screen color to match the surrounding environment, according to the extension listing.

CRX Viewer opens browser extension packages or store pages and provides tools to inspect their images, code, markup, and locales.

Skip sponsored segments, opening animations, and prompts in Bilibili videos with this browser extension.

Amino provides a live CSS editor in a browser extension, letting users customize websites with persistent styles and create themes or skins.

Custom Dark Mode applies customized dark styles to webpages through a browser add-on.

This browser extension opens Ethereum addresses and transaction hashes from web pages in popular explorers and dashboards.