The Mozila Blog

Two years ago Mozilla asked two leading experts on deceptive design, Dr. Harry Brignull and Cennydd Bowles, to look at how Microsoft was treating people who tried to use a different browser on Windows. Their report, Over The Edge, documented a pattern of design choices in Windows, Edge, and Bing that nudged, pressured, and at times tricked people into using Edge.

Open source AI has crossed a threshold. For years the debate has centered around whether open models could ever compete with closed ones. This is no longer a debate we should be having. Today Mozilla is publishing its inaugural State of Open Source AI report, built on new analysis and a global survey of 950+ developers, showing that open models are no longer playing catch-up.

We don’t put our name on much. So when we do, it means something. Starting with the 2026/27 season, Firefox is Wrexham AFC’s Official Web Browser Partner and front-of-kit sponsor on the men’s and women’s teams. More than 160 years old and nearly lost for good, the football club was saved by the community that loved it and has been climbing ever since. Wrexham AFC built something real by doing things their own way and staying close to the community that carries them. That’s a story we recognize.

Earlier this month, we officially stood up Mozilla.org: a new 501(c)(3) nonprofit created to steward the long term success of the Mozilla Project. Over the last year or so, I’ve said a lot about how AI is reshaping the web — and how we need to simultaneously stand up for the open internet Mozilla helped build and shape what the internet is becoming in the AI era. This is a huge and urgent challenge. Mozilla has evolved and grown a great deal in order to step up to this challenge.

If you’ve been running into endless CAPTCHAS or website login requests lately, you’re not imagining things. Websites, facing a rising tide of abusive traffic from bots, are adopting increasingly aggressive countermeasures, damaging user’s experience of the web, their privacy and open access to the web. In this post, we’ll talk about a new initiative we’re launching with Cloudflare, other web browsers, and web stakeholders to address this challenge while keeping the web anonymous by default.

Firefox gives you many ways to make the browser your own, from privacy settings and AI controls to tab management, custom colors, and more. As we continue to improve Firefox, you get more control over how it works for you. Today, we’re introducing a redesigned settings experience that makes your options easier to find, understand, and manage.

Skip to content Firefox has been busy introducing updates across productivity, privacy and AI. From Project Nova and browser-wide AI controls to expanded privacy protections and new ways to stay organized, the goal is simple: help you spend less time managing your browser and more time getting things done online. But building the best browser isn’t just about shipping new features. It’s also about building them alongside the people who use Firefox every day.

For a limited time, where the VPN is available, users can get unlimited VPN bandwidth in Firefox – up from the 50 gigabytes monthly limit — plus access to over 25 country locations to browse from. Don’t have Firefox yet? Try it now. Firefox’s free built-in VPN usually gives eligible users 50 GB of free bandwidth each month. From now through Aug. 31, we’re making that unlimited, so you have more room to browse privately while you travel, work from public Wi-Fi or connect from somewhere new.

Your browser tabs say a lot about your life: work projects, vacation plans, shopping carts and all the rabbit holes in between. Add the world’s biggest soccer tournament to the mix, and your browser is suddenly juggling scores to check, streams to watch, lineups to scan and group chats to keep up with. And since many matches kick off during the workday, there will be lots of temptation to just sneak a peek at the action between meetings. Firefox is built to be your ultimate second screen.

The web is built by communities, but not all communities use the web the same way. That philosophy shaped part of this week’s Firefox 151 release, which introduced support for the Web Serial API on desktop. Most folks won’t use this API, but for our community of builders and tinkerers, it unlocks the ability to use Firefox to communicate directly with compatible hardware devices like microcontrollers, development boards, and other serial-connected devices.