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Download Firefox 44.0

Mozilla Firefox for PC Windows 44.0

By Mozilla Organization  (Open Source)
User Rating

Managing Browser Add-Ons In Mozilla Firefox

Mozilla Firefox is a fast, light and tidy open source web browser. At its public launch in 2004 Mozilla Firefox was the first browser to challenge Microsoft Internet Explorer’s dominance. Since then, Mozilla Firefox has consistently featured in the top 3 most popular browsers globally. The key features that have made Mozilla Firefox so popular are the simple and effective UI, browser speed and strong security capabilities. The browser is particularly popular with developers thanks to its open source development and active community of advanced users.

Easier Browsing

Mozilla put of a lot of resources into creating a simple but effective UI aimed at making browsing quicker and easier. They created the tab structure that has been adopted by most other browsers. In recent years Mozilla has also focused on maximizing browsing area by simplifying toolbar controls to just a Mozilla Firefox button (which contains settings and options) and back/forward buttons. The URL box features direct Google searching as well as an auto predict/history feature called Awesome Bar. On the right side of the URL box there are bookmarking, history and refresh buttons. To the right of the URL box is a search box which allows you to customize your search engine options. Outside of that a view button controls what you see below the URL. Next to that you have the download history and home buttons.


Mozilla Firefox boasts impressive page load speeds thanks to the excellent JagerMonkey JavaScript engine. Start up speed and graphics rendering are also among the quickest in the market. Mozilla Firefox manages complex video and web content using layer-based Direct2D and Driect3D graphics systems. Crash protection ensures only the plugin causing the issue stops working, not the rest of the content being browsed. Reloading the page restarts any affected plugins. The tab system and Awesome Bar have been streamlined to launch/get results very quickly too.


Mozilla Firefox was the first browser to introduce a private browsing feature which allows you to use the internet more anonymously and securely. History, searches, passwords, downloads, cookies and cached content are all removed on shutdown. Minimizing the chances of another user stealing your identity or finding confidential information. Content security, anti-phishing technology and antivirus/antimalware integration ensures your browsing experience is as safe as possible.

Personalisation & Development

One of the best features of the Mozilla Firefox UI is customization. Simply right click on the navigation toolbar to customize individual components or just drag and drop items you want to move around. The inbuilt Mozilla Firefox Add-ons Manager allows you to discover and install add-ons within the browser as well as view ratings, recommendations and descriptions. Read more about the top recommended add-ons for Mozilla Firefox. Thousands of customizable themes allow you to customize the look and feel of your browser. Site authors and developers can create advanced content and applications using Mozilla’s open source platform and enhanced API.

Looking for the Mac version of Mozilla Firefox? Download Here

Looking for the 64-bit version of Mozilla Firefox? Download Here

Check out our guide to alternative browsers if you're looking for something a little different.

Please note: from version 53.0 onward Windows XP and Vista are no longer supported.

Title: Firefox 44.0
Filename: Firefox Setup 44.0.exe
File size: 41.06MB (43,051,376 bytes)
Requirements: Windows 2000 / XP / Vista / Windows 7 / XP 64-bit / Vista 64-bit / Windows 7 64-bit / Windows 8 / Windows 8 64-bit / Windows 10 / Windows 10 64-bit
Languages: Multiple languages
License: Open Source
Date added: January 27, 2016
Author: Mozilla Organization
MD5 Checksum: 6D2EF42433D39596D8AA82928456B533

# New
- Improved warning pages for certificate errors and untrusted connections
- Enable H.264 if system decoder is available
- Enable WebM/VP9 video support on systems that don't support MP4/H.264
- In the animation-inspector timeline, lightning bolt icon next to animations running on the compositor thread
- Support the brotli compression format via HTTPS content-encoding
- Screenshot commands allow user choice of pixel ratio in Developer Tools
# Fixed
- Windows XP and Vista screensaver doesn't disable when watching videos
- Various security fixes
# Changed
- To support unicode-range descriptor for webfonts, font matching under Linux now uses the same font matching code as other platforms
- Use a SHA-256 signing certificate for Windows builds, to meet new signing requirements
- Firefox has removed support for the RC4 decipher
- Firefox will no longer trust the Equifax Secure Certificate Authority 1024-bit root certificate or the UTN - DATACorp SGC to validate secure website certificates
- Stricter validation of web fonts
- On-screen keyboard support temporarily turned off for Windows 8 and Windows 8.1
# Developer
- Right click on a logged object in the console to store it as a global variable on the page
- Visual tools for Animation:
* View/Edit CSS animation keyframe rules directly in the inspector
* Visually modify the cubic-bezier curve that drives the way animations progress through time
* Discover and scrub through all CSS animations and transitions playing on the page
- Visual tools for Layout and Styles:
* Display rulers along the viewport to verify size and position and use the measurement tool to easily detect spacing and alignment problems
* Use CSS filters to preview and create real-time effects like drop-shadows, sepia, etc
- New memory tool for inspecting the memory heap
- Service Workers API
- Built-in JSON reader to intuitively view, search, copy and save data without extensions
- Jump to function definitions in the debugger with Cmd-Click
- WebSocket Debugging API and add-on
- The rule view now displays styles using their authored text, and edits in the rule view are now linked to the style editor