Browser Extensions

Block unwanted pop-up windows in Firefox with Popupblocker, which can show a small notification when it stops one.

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

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

Collect links, notes, and images in Karakeep, a self-hostable app with automatic AI tagging and full-text search.

Custom Page Zoom lets users set a zoom level for an individual website or for all websites.

External Application Button adds a browser toolbar button and customizable context-menu items for launching external applications.

Collect, read, annotate, and preserve links with Linkwarden, a self-hosted collaborative bookmark manager.

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

Custom Right-Click Menu adds user-defined links, scripts, stylesheets, and submenus to a browser context menu.

Refined GitHub is a browser extension that simplifies GitHub’s interface and adds features.

User-Agent Switcher and Manager lets users modify the browser User-Agent string that websites use to select delivered content.

An open-source userscript manager, Violentmonkey adds userscript support to web browsers.

Awesome Userscripts is a curated list of user scripts, with the repository organized around scripts for browsers and web services.

Momentum turns a browser’s new tab page into a focus workspace with goals, timers, site blocking, and soundscapes.

Releases Insights parses sources such as Mercurial logs, APIs, and crash data to examine past software releases.

Copycat copies web content and can capture tab titles or links in formats such as plain text; the extension supports Chrome, Edge, and Firefox.

MaterialYouNewTab provides a browser new-tab page inspired by Google Material You design.

Shaarli provides a personal bookmarking service described by its project as database-free, with a self-hosted bookmark manager focus.

Explore a curated list of projects focused on browser start pages in Awesome Startpage, with examples and resources for customization.

Material icons for web browsers are provided by this browser extension for GitHub.

hexagonTab provides a customizable start page with hexagon-shaped bookmarks and adjustable colors, layout, and background.

Nightly provides a themed, configurable browser start page, with setup instructions for Chromium-based and Firefox-based browsers.

Native Adaptive Streaming is a legacy browser extension project for HLS and MPEG-DASH playback; its page points to a successor project.

Open Multiple URLs is a browser extension for opening lists of URLs and extracting URLs from text, with Chrome and Firefox support.