See your next events, get meeting desktop notifications, add or snooze events without opening the Google Calendar page!
If you have multiple logins for web based e-mail accounts (like Gmail and Yahoo! mail), then CookieSwap enables you to easily switch between those different accounts by swapping the 'cookies' that the sites use to know you.
Safavor is a browser independent bookmark manager which can be stored on a USB stick (or on any other storage medium) to ensure easy transport.
Firefox Syncand
An extension which supports one-click downloads of illustrations from Pixiv. It's able to choose automatically appropriate file names.
This add-on can be used to clear all those preferences left by extensions after uninstallation, all those garbage which some developers do not care on clearing themselves on their add-ons and which later or sooner will make Firefox to load slower.
Menu Icons Plus iconifies your Firefox menus and more! It includes several different icons sets to choose from, along with the ability to import/export icon sets. It also provides options for changing other aspects of the menus' appearance.
This extension allows you to enter data into the Password Manager database instead of relying on Firefox, Thunderbird, SeaMonkey, etc., to do it, as well as making changes to existing entries.
? Click a bunch of tags in the sidebar or menu to see the bookmarks and other tags that are related. Use the related tags to quickly filter your search.
It blocks ads, tracking scripts, social share buttons, pop-ups, and other annoyances from websites you visit. These things all waste mobile data, compromise privacy, and slow down web browsing.
uBlock Origin
Plasma Browser Integration is an extension for common browsers to closer fit into the Plasma shell.
Markdown document viewer. Allows to visualize formatted markdown documents in browser.
Find employee email addresses for any company and display useful contextual data for anyone who emails you.
LeadBrowser
Displays a country flag depicting the location of the current website's server. Using an offline database for arbitrary IP address to ISO country code. And provides utilities functions in right-click menu on button and also on webpage.
Scrapyard is a bookmarking extension where you can store and organize bookmarks, page fragments, complete HTML pages and PDF documents, or take notes. It is intended as a modern alternative to the legacy ScrapBook add-on.
"If you're worried about Pale Moon's issues, know that one of our community chatroom members is developing a fork called Web Browser that is focused on stability, privacy and customizability even more so than its predecessor.
Mozilla Firefoxand
LibreWolf
Anti-WebMiner protects your PC against web cryptocurrency miners (JS scripts like Coinhive executed in the browser) by modifying Windows hosts file.
Proxy Switcher allows you to modify your proxy settings easily from the toolbar panel. Toolbar icon indicates the current type of proxy your browser currently using. The UI for changing proxies is very intuitive. It is very close to the Firefox proxy manager window.
Yabs.io ( https://www.yabs.io ) - Yet another bookmarks service - I would say yabs.io https://www.yabs.io - gives you everything that delicious had and more. And it’s free.
Offline Pages Pro is probably the world’s most advanced offline browser. Download entire websites with all formatting, documents, video, and client-side interactivity, so you can browse offline — without any Internet connection.
SingleFileand
Cloudmarks (formerly Moofmarks) is a Safari extension that works with cloud bookmarking services Pinboard, Delicious, Kippt, and Google Bookmarks. Cloudmarks lets you access your cloud bookmarks in a convenient popover window without interrupting your browsing.
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