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Mozilla

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1,006 reviews
  • 18 profiles
  • 13 categories
Average star rating
4.4
Serving customers since
2005

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Thunderbird

335 reviews

Thunderbird is a free, open-source email client developed by Mozilla, designed to provide users with a secure, customizable, and efficient email management experience. Compatible with Windows, macOS, and Linux, Thunderbird supports multiple email protocols, including POP and IMAP, allowing seamless integration with various email services. Its user-friendly interface and robust feature set make it a preferred choice for individuals and organizations seeking a reliable alternative to proprietary email clients. Key Features and Functionality: - Adaptive Junk Mail Controls: Thunderbird's intelligent spam filters learn from user actions to effectively identify and segregate unwanted emails, reducing inbox clutter. - Integrated RSS and Blog Reader: Users can subscribe to RSS feeds and blogs directly within Thunderbird, enabling them to stay updated with the latest news and content without leaving the application. - Saved Search Folders: This feature allows users to create virtual folders that display messages based on specific search criteria, facilitating efficient email organization and retrieval. - Global Inbox Support: Thunderbird enables the consolidation of multiple email accounts into a single inbox, streamlining email management for users with several accounts. - Message Grouping and Labeling: Users can group messages by attributes such as date, sender, or priority, and apply labels for easy categorization and prioritization. - Privacy Protection: To safeguard user privacy, Thunderbird automatically blocks remote images in emails from unknown senders, preventing potential tracking and data collection. - Extensibility with Add-ons and Themes: Thunderbird supports a wide range of add-ons and themes, allowing users to customize the application's functionality and appearance to suit their preferences. Primary Value and User Solutions: Thunderbird addresses common challenges faced by email users by offering a secure and customizable platform that enhances productivity and privacy. Its adaptive spam filters and privacy features protect users from unwanted emails and potential threats, while the integration of RSS feeds and blogs consolidates information management within a single application. The ability to manage multiple email accounts through a unified inbox, coupled with advanced search and organization tools, streamlines email workflows and reduces the time spent managing communications. Furthermore, Thunderbird's open-source nature and support for add-ons empower users to tailor the application to their specific needs, ensuring a personalized and efficient email experience.

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Mozilla Firefox

504 reviews

Firefox Web Browser. We are Mozilla. Doing good is part of our code. Different by Design.

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Thunderbird

335 reviews

Thunderbird is a free, open-source email client developed by Mozilla, designed to provide users with a secure, customizable, and efficient email management experience. Compatible with Windows, macOS, and Linux, Thunderbird supports multiple email protocols, including POP and IMAP, allowing seamless integration with various email services. Its user-friendly interface and robust feature set make it a preferred choice for individuals and organizations seeking a reliable alternative to proprietary email clients. Key Features and Functionality: - Adaptive Junk Mail Controls: Thunderbird's intelligent spam filters learn from user actions to effectively identify and segregate unwanted emails, reducing inbox clutter. - Integrated RSS and Blog Reader: Users can subscribe to RSS feeds and blogs directly within Thunderbird, enabling them to stay updated with the latest news and content without leaving the application. - Saved Search Folders: This feature allows users to create virtual folders that display messages based on specific search criteria, facilitating efficient email organization and retrieval. - Global Inbox Support: Thunderbird enables the consolidation of multiple email accounts into a single inbox, streamlining email management for users with several accounts. - Message Grouping and Labeling: Users can group messages by attributes such as date, sender, or priority, and apply labels for easy categorization and prioritization. - Privacy Protection: To safeguard user privacy, Thunderbird automatically blocks remote images in emails from unknown senders, preventing potential tracking and data collection. - Extensibility with Add-ons and Themes: Thunderbird supports a wide range of add-ons and themes, allowing users to customize the application's functionality and appearance to suit their preferences. Primary Value and User Solutions: Thunderbird addresses common challenges faced by email users by offering a secure and customizable platform that enhances productivity and privacy. Its adaptive spam filters and privacy features protect users from unwanted emails and potential threats, while the integration of RSS feeds and blogs consolidates information management within a single application. The ability to manage multiple email accounts through a unified inbox, coupled with advanced search and organization tools, streamlines email workflows and reduces the time spent managing communications. Furthermore, Thunderbird's open-source nature and support for add-ons empower users to tailor the application to their specific needs, ensuring a personalized and efficient email experience.

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Firefox Developer Edition

46 reviews

Popular, powerful web development tool. Inspect HTML, modify style and layout in real-time. Advanced JavaScript debugger for any browser. Analyze network usage & performance.

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MDN Web Docs

21 reviews

Resources for developers, by developers.

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Firefox Developer Tools

18 reviews

Firefox Developer Tools is an integrated suite of web development tools built directly into the Firefox browser, designed to assist developers in inspecting, editing, and debugging web applications efficiently. These tools provide a comprehensive environment for analyzing and optimizing web content, ensuring compatibility and performance across various platforms. Key Features and Functionality: - Page Inspector: Allows developers to examine and modify the HTML and CSS of a webpage, facilitating real-time adjustments and layout troubleshooting. - Web Console: Displays messages logged by a webpage and enables interaction with the page using JavaScript, aiding in the identification and resolution of scripting issues. - JavaScript Debugger: Provides the capability to pause, step through, and inspect JavaScript code execution, essential for diagnosing and fixing complex scripting errors. - Network Monitor: Tracks network requests made by a webpage, offering insights into resource loading times and aiding in performance optimization. - Performance Tools: Analyzes runtime performance to identify bottlenecks, helping developers enhance the responsiveness and efficiency of their applications. - Responsive Design Mode: Simulates different screen sizes and resolutions, allowing developers to test and adapt their designs for various devices. - Accessibility Inspector: Evaluates web content for accessibility issues, ensuring compliance with standards and improving usability for all users. Primary Value and User Solutions: Firefox Developer Tools empower developers to build, test, and refine web applications directly within the browser, streamlining the development workflow. By offering a robust set of debugging and inspection tools, developers can quickly identify and resolve issues related to code, performance, and design. The integration of these tools into the browser eliminates the need for external software, providing a seamless and efficient development experience. Additionally, features like Responsive Design Mode and the Accessibility Inspector ensure that applications are both user-friendly and accessible across a wide range of devices and audiences.

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Mozilla WebThings

15 reviews

An open platform for monitoring and controlling devices over the web.

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hubs

13 reviews

Hubs allows you to easily create web-based rooms to meet with others within Mixed Reality. Create a room with a single click, and then just share the link with someone.

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SeaMonkey Composer

13 reviews

Web-browser, advanced e-mail, newsgroup and feed client, IRC chat, and HTML editing made simple all your Internet needs in one application.

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Firefox Reality

12 reviews

Firefox Reality serves you the very best immersive games, videos, environments, and experiences from around the Web.

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Star Rating

648
279
61
13
5

Mozilla Reviews

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Profile Name
Star Rating
648
279
61
13
5
Maryam C.
MC
Maryam C.
02/27/2026
Validated Reviewer
Verified Current User
Review source: G2 invite
Incentivized Review

Intuitive, Easy, Fun AI Call Experience

It was very intuitive to filled out the answers. I just needed to copy, paste and format it the way I wanted. Testing out the AI call was fun and very easy. My friend also called to make an appt and she loved it and thought the process was intuitive.
BP
Bijay P.
02/24/2026
Validated Reviewer
Review source: Organic

Mozilla Firefox is the best web browser so far.

The best thing I love about Mozilla Firefox is its security features. Most of the extensions are being monitored, so it gives peace of mind while using them.
Luca P.
LP
Luca P.
CTO - Growth Marketer full stack #MarTech | ⚡️ SaaS Advisor
01/29/2026
Validated Reviewer
Verified Current User
Review source: G2 invite

Firefox Developer Edition: IDE-Like DevTools with Exceptional CSS & Performance Insights

As a technical leader responsible for overseeing the architecture and delivery of complex web applications, I prioritize tools that offer granular control and introspection over those that simply provide a viewing portal. Firefox Developer Edition distinguishes itself by integrating a suite of diagnostic instruments that function less like a standard browser and more like an Integrated Development Environment (IDE) specifically calibrated for the front-end layer. My appreciation for this platform stems from its robust adherence to web standards and its ability to surface the underlying mechanics of the rendering engine, which is critical for maintaining code quality at scale. The primary asset in my daily workflow is the advanced CSS Layout inspector. In a modern development environment where we rely heavily on CSS Grid and Flexbox for component architecture, the ability to visualize the layout computation is non-negotiable. Firefox’s implementation provides a distinct operational advantage here. When inspecting a grid container, the tool projects a comprehensive overlay that delineates tracks, lines, and area names. This is not merely a visual aid; it is a verification tool that allows me to confirm that the computed layout matches the architectural intent. I frequently use this to audit the structural integrity of our design system components, ensuring that implicit grids are behaving as expected and that  gap  properties are rendering correctly across different viewports. The specificity of the overlay, differentiating between the explicit grid defined in code and the implicit grid created by content flow, reduces the time required to diagnose layout regressions significantly. Furthermore, the “Inactive CSS” diagnostic capability functions effectively as a real-time linter within the browser. In large-scale applications with cascading style sheets that have evolved over years, dead code and conflicting properties are inevitable. This browser proactively identifies properties that have no impact on the rendering pipeline, such as a "top" declaration on a statically positioned element, and flags them immediately. This feature provides an essential feedback loop for my engineering team. It prevents the accumulation of technical debt by ensuring that we are not shipping redundant bytes or illogical style rules. It forces a level of syntactical discipline that standard linters often miss because it understands the runtime context of the element, not just the static text of the file. I also place high value on the specialized animation tooling. The Performance and Animation inspectors offer a level of granularity that allows for the precise tuning of transition physics. Being able to scrub through an animation timeline, isolate specific properties, and manipulate Bézier curves directly in the interface allows for a level of polish that is difficult to achieve through code iteration alone. For performance-critical interactions, having visibility into the frame budget and being able to identify which CSS properties are triggering expensive layout thrashes (versus cheaper composite-only changes) is essential for maintaining the 60fps standard we demand for our user interfaces. The visualization of the main thread activity during these animations helps in pinpointing bottlenecks in our JavaScript execution that may be blocking the rendering pipeline. The Network Monitor is another area where the tool demonstrates its utility for backend integration analysis. While most browsers offer network inspection, the request blocking and editing capabilities here are particularly streamlined. I frequently use the “Edit and Resend” functionality to test API endpoints with modified headers or payloads without needing to switch to an external tool like Postman or CURL. This rapid prototyping of network requests within the context of the authenticated session accelerates the debugging of edge cases, such as race conditions or improper error handling in the frontend client. The ability to throttle network speeds to simulate high-latency environments is also implemented with sufficient accuracy to audit our application’s resilience and loading states under poor connectivity conditions. Finally, the Font Panel offers a level of typographic control that aligns with the increasing complexity of variable fonts. As we move towards more dynamic typography to optimize performance and design flexibility, the ability to manipulate font axes, weight, width, slant, and optical sizing, via a unified interface allows for immediate validation of font files. This eliminates the guesswork often associated with implementing  "font-variation-settings"  in CSS and ensures that the assets we are serving are rendering correctly before we commit the implementation details.

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HQ Location:
San Francisco, CA

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@mozilla

What is Mozilla?

At Mozilla, they are a global community of technologists, thinkers and builders working together to keep the Internet alive and accessible, so people worldwide can be informed contributors and creators of the Web.

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Year Founded
2005