Firefox Developer Edition. Firefox, built just for developers. Resources for developers, by developers. Firefox Reality. Explore the immersive web on your virtual reality headset. Donate your voice to help make voice recognition open to. A directory of articles which are particularly helpful for new Mozilla developers. Working with Mozilla Source Code A code overview, how to get the code, and the coding style guide. Build Instructions How to build Firefox, Thunderbird, SeaMonkey, or other Mozilla applications. Editor Configuration Tips on setting up your favorite IDE or text. Firefox Developer Edition will create a new profile if you run it at the same time as Firefox. To keep your bookmarks on both versions, see Recover lost bookmarks on Firefox Developer Edition. How do I learn more about Firefox Developer Edition? The Mozilla Developer Network is the best place to learn more about Developer Edition. Download Firefox Developer Edition 88.0b9 for Windows for free, without any viruses, from Uptodown. Try the latest version of Firefox Developer Edition 2021 for Windows.
Mozilla cuts 250 jobs, says Firefox development will be affected Mozilla reduces investment in developer tools and platform feature development. Jon Brodkin - Aug 12, 2020 5:32 pm UTC.
Improve your browsing experience by getting your hands on the latest edition of Firefox with the new and improved Quantum engine and all the latest goodies
Firefox Developer Edition, also called Firefox Quantum, allows users to get their hands on the latest features and development tools which will eventually find their way into the mainstream, stable versions of Firefox.
One of the main differences between the latest developer editions and the ones from the past is that they're no longer based on the Aurora channel which has now been scrapped. Instead, the developer version is now based on the Beta channel.
New and improved engine is sure to win back former Firefox users
The star of the show is the new, next-generation engine which now allows Firefox to make the most of all your computer's CPU cores. The effects of those tons of performance improvements are pretty obvious from the first few seconds you start browsing.
Indeed, performance was one of the main goals, but you'll be pleased to hear that various privacy-related improvements have been added as well. For instance, Firefox Quantum is better equipped to block online trackers, as well as at keeping your privacy untouched than the generation it replaces.
Making life better for web developers, one of the top priorities of this new version of Firefox
Furthermore, there's a new set of developer tools available, on top of the ones you're already accustomed to from past versions of Firefox. The main highlights here are the comprehensive JavaScript debugger which is capable of targeting multiple browsers and the support for the CSS Grid which, along with other built-in tools (Style Editor, for example) makes it simple for you to create rich web layouts in the browser.
The Console, Network tabs, and the Inspector have all gained lots of useful new features, as well. For instance, the Inspector is now more suited for CSS work, and the Console supports message grouping and in-line object inspecting.
Refreshed looks thanks to a new user interface called Photon
There are other skin-deep changes as well. For instance, Firefox Quantum introduces a new GUI design-pattern, with a more 'pointy' feel, giving it a more modern look. Gone are the curvy tabs, replaced by clear-cut square tabs, and you can also say goodbye to the boring main menu which has been replaced with a new, better-organized one.
Speaking of tabs, note that Firefox Quantum boasts a new type of new tab window which adds the typical list of most-visited websites and a few recommended stories.
Redesigned engine, more performance, new looks, better developer tools, and an overall better package
Mozilla Firefox Developers Edition
All things considered, Firefox Quantum is the biggest leap forward we've seen in the last few years, and it's meant to give Firefox the well-deserved edge over its competition. This is, without a doubt, a very beneficial and a long-awaited overhaul for what is one of the best browsers out there.
Filed under
Firefox Developer Edition was reviewed by Vladimir Ciobica
New in Firefox Developer Edition 88.0b6:- New:
- Added content blocking, a collection of Firefox settings that offer users greater control over technology that can track them around the web. In 63, users can opt to block third-party tracking cookies or block all trackers and create exceptions for trusted sites that don’t work correctly with content blocking enabled.
- WebExtensions now run in their own process on Linux
- Firefox now warns about having multiple windows and tabs open when quitting from the main menu. The Save and Quit feature has been removed. You can restore your session by ticking the box for Restore previous session in the General → Startup options or by using Restore Previous Session in the main menu.
Firefox Developer Edition 89.0b3
add to watchlistsend us an update- runs on:
- Windows 10 32/64 bit
Windows 8 32/64 bit
Windows 7 32/64 bit - file size:
- 52.6 MB
- filename:
- Firefox Setup 89.0b3.exe
- main category:
- Internet
- developer:
- visit homepage
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There are lots of ways to contribute to the Mozilla project: coding, testing, improving the build process and tools, or contributing to the documentation. This guide provides information that will not only help you get started as a Mozilla contributor, but that you'll find useful to refer to even if you are already an experienced contributor.
Documentation topics
- Getting Started
- A step-by-step beginner's guide to getting involved with Mozilla.
- For new Mozilla developers
- A directory of articles which are particularly helpful for new Mozilla developers.
- Working with Mozilla Source Code
- A code overview, how to get the code, and the coding style guide.
- Build Instructions
- How to build Firefox, Thunderbird, SeaMonkey, or other Mozilla applications.
- Editor Configuration
- Tips on setting up your favorite IDE or text editor to work with Mozilla projects.
- Development process overview
- An overview of the entire Mozilla development process.
- Managing multiple profiles
- When working with prerelease versions of Firefox, it's often helpful to have multiple Firefox profiles, such as one for each channel, or for different kinds of testing.
- Automated Testing
- How to run Mozilla's automated tests, and how to write new tests.
- How to submit a patch
- After getting your patch written, you need to get it checked into the tree. This article explains the review process and how to get your patch approved.
- Getting documentation updated
- How to ensure that documentation is kept up to date as you develop.
- Mozilla modules and module ownership
- This article provides information about Mozilla's modules, what the role of a module owner is, and how module owners are selected.
- Code snippets
- Useful code samples for a wide variety of things you might need to figure out how to do.
- Mozilla development strategies
- Tips for how to make the most of your time working on the Mozilla project.
- Debugging
- Find helpful tips and guides for debugging Mozilla code.
- Performance
- Performance guides and utilities to help you make your code perform well (and to play nicely with others).
- The Mozilla platform
- Information about the workings of the Mozilla platform.
- Mozilla
- Much more additional information about Mozilla coding practices.
- Adding APIs to the navigator object
- How to augment the
window.navigatorobject with additional APIs. - Interface Compatibility
- Guidelines for modifying scriptable and binary APIs in Mozilla.
- Customizing Firefox
- Information about creating customized versions of Firefox.
- Task-Graph Generation
- What controls the jobs that run on a push to version control? How can you change that?
- Virtual ARM Linux environment
- How to set up an ARM emulator running Linux for testing ARM-specific, but not necessarily platform-specific, code. Useful for mobile developers.
- Obsolete Build Caveats and Tips
- A place to put build tips which are no longer relevant to building the latest version of the code from main but are relevant when building old codebases.
- Firefox Source Docs
- Web-hosted documentation built from the mozilla-central source code.
Tools
Firefox Developers Download
- Bugzilla
- The Bugzilla database used to track issues for Mozilla projects.
- SearchFox
- Mozilla code searching. Indexes JS as well as C++, includes blame capabilities. In active development.
- Mercurial
- The distributed version-control system used to manage Mozilla's source code.
- Mozilla build VM
- A VirtualBox compatible virtual machine configured with all the software needed to build and work on Firefox.
- TaskCluster
- TaskCluster is the task execution framework that supports Mozilla's continuous integration and release processes.
- Treeherder
- Treeherder shows the status of the tree (whether or not it currently builds successfully). Check this before checking in and out, to be sure you're working with a working tree.
- Perfherder
- Perfherder is used to aggregate the results of automated performance tests against the tree.
- Crash tracking
- Information about the Socorro crash reporting system.
- Callgraph
- A tool to help perform static analysis of the Mozilla code by generating callgraphs automatically.
- Developer forums
- A topic-specific list of discussion forums and mailing lists where you can talk about Mozilla development issues.
- Mozilla Platform Development Cheat Sheet (archive.org)
- Brian Bondy's list of frequently referenced information for platform developers. Brian Bondy took down codefirefox.com, but the archived cheatsheet might still be useful.
- Firefox development video tutorials
- Brian Bondy's video tutorials on Firefox development.