Discontinued Firefox Extensions

Discover best Discontinued Firefox softwares, apps and websites.

Best Discontinued Firefox Extensions

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Firebug

Firebug

Open Source

Firebug was a powerful, open-source web development tool tightly integrated with the Firefox web browser. It provided a comprehensive environment for debugging, editing, and monitoring HTML, CSS, and JavaScript live on any web page.

Deeply integrated within the Firefox browser
Firefox extension
Development Web Browsers
StratusBase

StratusBase

Free Personal

StratusBase was a cloud-based platform designed to empower users to build custom web databases and forms without requiring coding knowledge. It offered tools for data management, workflow automation, and reporting, leveraging the flexibility of the cloud.

Enables database creation without coding.
Cloud based
Memonic

Memonic

Freemium

Memonic was a discontinued online note-taking application designed for research and organization. It offered features like offline access, multi-language support, cloud synchronization, and a web clipper to help users save and manage information from various sources.

Effective web clipper for capturing online information.
Multiple languages
Office & Productivity
Firefox Hello

Firefox Hello was a simple, browser-based video and audio communication tool built directly into the Firefox browser. It allowed users to connect with others quickly and easily through sharable links, requiring no registration or account creation. Its core focus was on immediate, privacy-conscious communication.

No account or registration required for use.
Firefox extension
Social & Communications Web Browsers
RapidShare

RapidShare

Commercial

RapidShare was a pioneering online file hosting service that allowed users to upload and share files over the internet. It provided a simple platform for storing and distributing digital content, operating based on both free and premium access tiers.

Easy to upload and share files via a simple link.
Backup & Sync File Sharing
uBlock

uBlock

Open Source

uBlock is a powerful, yet lightweight, content blocker available as a browser extension for various platforms. It effectively blocks ads, trackers, and malware sites, enhancing privacy and improving browsing speed. Although currently discontinued, its effectiveness and open-source nature made it a popular choice for users seeking a cleaner web experience.

Highly effective at blocking ads and trackers.
Built-in Ad-blocker
Security & Privacy Web Browsers
Adblock Edge

Adblock Edge

Open Source

Adblock Edge was a browser extension designed to block advertisements within web pages. Primarily focused on Microsoft Edge (formerly Project Spartan), it aimed to provide users with a cleaner, faster browsing experience by preventing the loading of various ad formats.

Blocks various ad formats effectively.
Firefox extension
Web Browsers
Kifi

Kifi

Free

Kifi was a collaborative bookmarking tool designed to help teams organize, share, and discover web pages. By creating a full-text index of shared content and integrating with popular communication platforms like Slack and Google, Kifi made finding relevant links easier and fostered team knowledge sharing.

Full-text search of saved web pages dramatically improves discoverability.
Browser based app
News & Books Office & Productivity Social & Communications Web Browsers
YoutubeConvert.TO

YoutubeConvert.TO was a popular online service and browser extension suite for converting YouTube videos to MP3 and MP4 formats. It offered a simple way to download audio or video directly from YouTube and other platforms.

Easy to use web interface and browser extensions
Google Chrome extension
Audio & Music Video & Movies Web Browsers
Video2mp3

Video2mp3

Freemium

Video2mp3 was a web-based service and browser extension that facilitated the conversion of YouTube videos to MP3 audio files. It was a popular tool for users looking to extract audio content from video formats for offline listening.

Extremely easy to use web interface.
Google Chrome extension
Audio & Music Video & Movies Web Browsers
Lightspark

Lightspark

Open Source

Lightspark is a free and open-source alternative SWF player designed to play Adobe Flash content. It acts as a runtime environment and browser extension, offering compatibility with Windows and supporting various Flash functionalities.

Free and open-source
Built-in Adobe Flash Player
Video & Movies
Prism

Prism

Open Source

Prism was a discontinued open-source application developed by Mozilla, designed to integrate web applications into the desktop experience by removing the standard browser interface and providing a dedicated window for each 'site-specific browser'.

Provides a focused, distraction-free environment for web applications.
Place websites on desktop
Web Browsers
Microsoft Silverlight

Microsoft Silverlight was a powerful, cross-platform browser plugin and runtime that enabled developers to create rich, interactive web and mobile applications with vector graphics, animations, audio, and video capabilities.

Enabled creation of visually rich and interactive web applications.
Browser extension
Development Web Browsers
Gnash

Gnash

Open Source

Gnash is a free and open-source software player for SWF files, a format primarily used for Adobe Flash media. Developed as part of the GNU Project, it aimed to provide an independent and secure alternative to Adobe Flash Player, supporting various Flash functionalities for animation, video, and interactive web content, particularly during the widespread use of Flash on the internet.

Free and open-source software
Embeddable
Video & Movies