Browse 1,791 Mozilla Firefox Plugins, Add-ons and extension on AlternativeTo.
An essential add-on for power users that have many tabs open. Curb your resource usage by unloading tabs that you haven't visited for a while. An unloaded tab is restored back to its original state when you need it again.
i2Symbol is your ultimate source of free symbols, emoticons, smileys, and styled text for all social networks such as Facebook, Twitter, and Google Plus.
This is the new tab you are dreaming of. Support website URL group management, data sync, dark theme mode, todo, weather, speed dial, search.
A fork (copy with changes) of the original XKit addon, which improves your Tumblr experience. It is comprised with the ability to install more extensions, further adding more features.
Always open new tabs to the right of the current one(which is not the same as setting browser.tabs.insertRelatedAfterCurrent to true). You can however get the default behaviour by:
Display what you're currently watching or listening to in your Browser on YouTube, YT Music, Netflix, Soundcloud and much more in your Discord Rich Presence.
Declutter your browser by snoozing tabs and windows until you actually need them. Snoozz tabs and windows now and have them reopen automatically later.
After installing BookmarkDupes, the basic usage is rather simple: To open, click the extension symbol (duplicate stars) or use the link in the options page of the extension. Then select what you want to display: Bookmark duplicates, Empty folders, Non-duplicate bookmarks, All...
An anime tracker where you can add anime to your list and edit your episode progress using either the website, the chrome extension or the mobile app.
NetworkChuck Cloud Browser, provides users a convenient way to open links inside a NetworkChuck Cloud Browser session. The page is rendered inside the Cloud Browser session, allowing users so safely interact with the webpage.
RefControl is an extension for Firefox that lets you control what gets sent as the HTTP Referer on a per-site basis.
FontFinder is created for designers, developers and typographers. It allows a user to analyze the font information of any element on a page, copy any piece(s) of that information to the clipboard, and perform inline replacements to test new layouts.
Rite.ly is the only self-branded URL shortener with banner, popup, image/text ad, form or video Link Ads (CTAs). Start free and use in RiteBoost, RiteForge or any social publishing product. Just $15/month for unlimited brands and Link Ads.
Add Water
In this app, you will be presented with a video clip shot from a first-person perspective as you walk around a specific location. Your challenge is to identify the town or city where the video was recorded.
GeoGuessr
Secures sensitive information with AES-256 and ECC p-384 encryption, generates and auto-fills passwords, synchronizes unlimited devices, and offers data migration.
YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages. YSlow is a Firefox add-on integrated with the Firebug web development tool.
Google Lighthouse
Firefox extension. Highly customizable text highlighter with different colors and save option for later visits.
ExpandURL.net is a tool designed to unshorten and reveal the original URLs behind shortened links. Users can paste a shortened link (e.g., from services like bit.ly, tinyurl.com, or t.co), and ExpandURL.net will fetch and display the full, original URL.
Kjuicer lets you highlight text on the web and automatically creates a three level summary (in - depth, medium and short).
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