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Firefox

784
338
+ 1
114
Opera Browser

54
48
+ 1
46
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Firefox vs Opera Browser: What are the differences?

Developers describe Firefox as "Mozilla's Web Browser". A free and open source web browser developed by The Mozilla Foundation and its subsidiary, Mozilla Corporation. Firefox is available for Microsoft Windows, macOS, Linux, BSD, and more. On the other hand, Opera Browser is detailed as "A multiplatform web browser". It is a secure, innovative browser with a built-in ad blocker, free VPN, units converter, social messengers, battery saver and much more - all for your best browsing experience.

Firefox and Opera Browser belong to "Web Browser" category of the tech stack.

Some of the features offered by Firefox are:

  • Private Browsing
  • Tracking Protection
  • Extensions

On the other hand, Opera Browser provides the following key features:

  • Low RAM usage
  • Block ads
  • Surf the web with enhanced privacy
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Pros of Firefox
Pros of Opera Browser
  • 14
    Add-ons
  • 13
    Open source
  • 11
    Themes
  • 11
    Free
  • 10
    Screenshots
  • 9
    Privacy
  • 8
    Account sync
  • 7
    Inspector
  • 7
    Customizable
  • 7
    Faster
  • 6
    Simple
  • 4
    Smooth autoscroll
  • 4
    Independent
  • 3
    Easy
  • 7
    Twitter, Messenger, WhatsApp, and Instagram built in
  • 6
    Add extensions to sidebar
  • 6
    Player, and My Flow
  • 6
    Multiple Workspaces
  • 5
    Sidebar
  • 5
    VPN
  • 4
    Innovative
  • 3
    Speed Dial Built In
  • 2
    Add websites integrated to opera
  • 1
    Highlight search results in web pages
  • 1
    Search highlight inside site

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Cons of Firefox
Cons of Opera Browser
  • 5
    Slower
  • 3
    Complicated
  • 1
    It is now silencing voices
  • 2
    Memory hungry
  • 1
    Developer version might provide a better experience 4 u
  • 0
    Stupid

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What is Firefox?

A free and open source web browser developed by The Mozilla Foundation and its subsidiary, Mozilla Corporation. Firefox is available for Microsoft Windows, macOS, Linux, BSD, and more.

What is Opera Browser?

It is a secure, innovative browser with a built-in ad blocker, free VPN, units converter, social messengers, battery saver and much more - all for your best browsing experience.

Need advice about which tool to choose?Ask the StackShare community!

Jobs that mention Firefox and Opera Browser as a desired skillset
CBRE
United Kingdom of Great Britain and Northern Ireland England Feltham
What companies use Firefox?
What companies use Opera Browser?
See which teams inside your own company are using Firefox or Opera Browser.
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What tools integrate with Firefox?
What tools integrate with Opera Browser?

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What are some alternatives to Firefox and Opera Browser?
Google Chrome
Commonly known simply as Chrome. It was first released in 2008 for Microsoft Windows, and was later ported to Linux, macOS, iOS, and Android.
Chromium
A fully functional browser on its own and supplies the vast majority of code for the Google Chrome browser.
Brave
It is a fast, private and secure web browser for PC and mobile. It blocks ads and trackers. It prevents you from being tracked by sneaky advertisers, malware and pop-ups.
Safari
It is faster and more energy efficient than other browsers. Handy tools help you save, find, and share your favorite sites. Built-in privacy features help keep your browsing your business.
Microsoft Edge
It is a fast and secure browser designed for Windows 10. Microsoft Edge comes exclusively with Windows 10 and cannot be downloaded or installed separately. It has easy tools to preview, group, and save tabs. Quickly find, manage, and open tabs you set aside without leaving the page you’re on.
See all alternatives