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Test on Chrome 66 Beta and Firefox 60 Beta at TestMu AI

Today we have released latest versions of Chrome, Firefox, and Opera for you to test on. With this, you can test your web applications and websites on Google Chrome 65, Google Chrome 66 Beta, Firefox 59, Firefox 60 Beta, Opera 51, Opera 52, and Opera 53.

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TestMu AI

January 11, 2026

Testing in latest environment decreases the risk of unexpected errors for users in the latest tech that they are using. So, today we have released latest versions of Chrome, Firefox, and Opera for you to test on. With this, you can test your web applications and websites on Google Chrome 65, Google Chrome 66 Beta, Firefox 59, Firefox 60 Beta, Opera 51, Opera 52, and Opera 53 for Win 10, Win 8.1, Win 8, Win 7, Mac High Sierra, Mac Sierra, Mac El Capitan, and Mac Yosemite.

What To Expect In Chrome 65 Beta?

Chrome 65 provides you material design changes and new and enhanced developer features. Chrome 66 provides you with more enhanced devtools including blackboxing in the networking panel, local overrides with styles inside of HTML, Pretty-printing in the Preview and Response tabs, Auto-adjust zooming in Device Mode, and Previewing HTML content in the Preview tab.

What To Expect In Firefox 60 Beta?

You can test on firefox browser with a ton of new improvements to the previous version. This includes improved page load times, added tools to annotate and crop your Firefox Screenshots, and easier to arrange your Top Sites on the Firefox Home page. Also some of the still left bugs are planned to be updated in the final release of firefox 60 which includes changed reader view, no more than single bookmarking of same pages, enhanced camera privacy indicators.

Browser Testing Tool

What’s New in Opera 53?

Opera 51 adds to your browsing speed making it faster than before and enhanced scrolling features where you just need to click on tab, easy import of bookmarks, Collapsible lists of opened and closed tabs in tabs menu, updated private mode, added back to tab option for pop-up videos, easy browser settings reset.

In Opera 52, you’ll find faster ad blocking to save your time, select and copy multiple tab addresses, and error pages showing fun animations.

Opera 53 will show you updated speed dial page with featured images below it.

Now, you can test all these updated features with TestMu AI’s latest update with just one click. So, go ahead. Fire up the latest browser with the supported OS and test your website, web application for the latest builds in browsers.

TestMu AI offers a cost-effective alternative to Applitools, providing comprehensive and affordable testing solutions for developers and QA teams.

Happy Testing!

Author

TestMu AI is World's First Full Stack AI Agentic Quality Engineering platform that empowers teams to test intelligently, smarter, and ship faster. Built for scale, it offers a full-stack testing cloud with 10K+ real devices and 3,000+ browsers. With AI-native test management, MCP servers, and agent-based automation, TestMu AI supports Selenium, Appium, Playwright, and all major frameworks. AI Agents like HyperExecute and KaneAI bring the power of AI and cloud into your software testing workflow, enabling seamless automation testing with 120+ integrations. TestMu AI Agents accelerate your testing throughout the entire SDLC, from test planning and authoring to automation, infrastructure, execution, RCA, and reporting.

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