Best Mozilla Firefox Alternatives in 2025
Looking for alternatives to Mozilla Firefox? In this comparison, we take a closer look at Mozilla Firefox alongside similar software solutions including Mozilla Firefox, Google Chrome, AVG Secure Browser, Opera Browser, Brave Browser, Avast Secure Browser, Microsoft Edge, Opera GX Stable, Mozilla Firefox ESR, Adobe Flash Player ActiveX, WebAdvisor by McAfee and Opera GX Stable.
Our detailed comparison table highlights key features, pricing, and performance of these leading solutions, empowering you to make an informed decision. Whether you're seeking robust functionality, user-friendly design, or cost-effective alternatives, explore how Mozilla Firefox, Google Chrome, AVG Secure Browser, Opera Browser, Brave Browser, Avast Secure Browser, Microsoft Edge, Opera GX Stable, Mozilla Firefox ESR, Adobe Flash Player ActiveX, WebAdvisor by McAfee and Opera GX Stable stack up to find the perfect software for your goals.
Ad Blocking
 Mozilla Firefox
|
Supports add-ons including optional ad blockers |
 Google Chrome
|
Built-in ad blocker complying with Better Ads Standards |
 AVG Secure Browser
|
Optional built-in ad blocker |
 Opera Browser
|
Built-in ad blocker |
 Brave Browser
|
Built-in ad blocker with script blocking and tracker prevention |
 Avast Secure Browser
|
Built-in ad blocker enhancing browsing experience |
 Microsoft Edge
|
Has built-in security features, no specific mention of built-in ad blocker |
 Opera GX Stable
|
Built-in ad blocker |
 Mozilla Firefox ESR
|
Supports add-ons including optional ad blockers |
 Adobe Flash Player ActiveX
|
Not applicable (plugin for multimedia content) |
 WebAdvisor by McAfee
|
Not applicable (security extension, not browser) |
|
Opera GX Stable
|
Built-in ad blocker |
Privacy and Security Features
|
Mozilla Firefox
|
Strong privacy and security features including strict tracking protection, encryption and anti-phishing protection |
|
Google Chrome
|
Built-in security, phishing and malware protection, enhanced security features |
|
AVG Secure Browser
|
Advanced privacy including anti-phishing, anti-tracking features, VPN service and enhanced password manager |
|
Opera Browser
|
Built-in integrated free VPN enhancing privacy, additional privacy features |
|
Brave Browser
|
Enhanced privacy with tracker blocking, fingerprint prevention, HTTPS Everywhere, and encryption; includes cryptocurrency-based reward system |
|
Avast Secure Browser
|
Built-in security features with bank mode for secure online transactions, HTTPS encryption, phishing attempt protection |
|
Microsoft Edge
|
Privacy & security features include tracking prevention and built-in password manager |
|
Opera GX Stable
|
Built-in security features including malware protection, dedicated VPN services, enhanced privacy options |
|
Mozilla Firefox ESR
|
Enhanced privacy with long-term support for stability and security updates |
|
Adobe Flash Player ActiveX
|
Not applicable; known security risks due to vulnerabilities |
|
WebAdvisor by McAfee
|
Real-time protection against malicious websites and downloads, added security via scanning and notifications |
Platform and Device Support
|
Mozilla Firefox
|
Cross-platform support including Windows, macOS, Linux, Android and iOS devices |
|
Google Chrome
|
Available on Windows, Mac, Linux, Android and iOS platforms |
|
AVG Secure Browser
|
Supports Windows and Mac operating systems; limited mobile support |
|
Opera Browser
|
Cross-platform including desktop (Windows, macOS, Linux) and Android mobile platforms |
|
Brave Browser
|
Available across all major operating systems including Windows, macOS, Linux, iOS and Android |
|
Avast Secure Browser
|
Supports Windows platform; runs on various devices including smartphones and tablets |
|
Microsoft Edge
|
Available on Windows, macOS, Android with integration to Microsoft's enterprise services |
|
Opera GX Stable
|
Cross-platform support including Windows, macOS and Linux operating systems |
|
Mozilla Firefox ESR
|
Supports Windows, macOS, and Linux; designed for stability on multiple devices including mobile with fewer updates over long term |
|
Adobe Flash Player ActiveX
|
Supported on multiple browsers predominantly on Windows and Mac; limited support on Linux; discontinued on modern browsers |
|
WebAdvisor by McAfee
|
Compatible as a browser extension for most popular desktop browsers across all platforms |
Choosing the right software isn’t just about features. Size, license type, user ratings, and popularity also matter.
This quick comparison shows how Mozilla Firefox stacks up against Mozilla Firefox, Google Chrome, AVG Secure Browser, Opera Browser, Brave Browser, Avast Secure Browser, Microsoft Edge, Opera GX Stable, Mozilla Firefox ESR, Adobe Flash Player ActiveX, WebAdvisor by McAfee and Opera GX Stable in these key areas—helping you find the best alternative for your needs.
Size
|
Mozilla Firefox
|
43.4MB |
|
Google Chrome
|
|
|
AVG Secure Browser
|
2.7MB |
|
Opera Browser
|
0.8MB |
|
Brave Browser
|
1.2MB |
|
Avast Secure Browser
|
109.7MB |
|
Microsoft Edge
|
1.8MB |
|
Opera GX Stable
|
|
|
Mozilla Firefox ESR
|
37.4MB |
|
Adobe Flash Player ActiveX
|
1.1MB |
|
WebAdvisor by McAfee
|
49.3MB |
|
Opera GX Stable
|
License
|
Mozilla Firefox
|
Freeware |
|
Google Chrome
|
Freeware |
|
AVG Secure Browser
|
Commercial |
|
Opera Browser
|
Freeware |
|
Brave Browser
|
Freeware |
|
Avast Secure Browser
|
Commercial |
|
Microsoft Edge
|
Freeware |
|
Opera GX Stable
|
Freeware |
|
Mozilla Firefox ESR
|
Open Source |
|
Adobe Flash Player ActiveX
|
Freeware |
|
WebAdvisor by McAfee
|
Commercial |
|
Opera GX Stable
|
Freeware |