The browser wars are resuming as Firefox Quantum, the new version of Mozilla's Firefox browser, challenges Google Chrome's dominance in the market. Firefox Quantum is built for speed and features a new look with a more polished experience, thanks to the Project Quantum initiative that improved the Gecko engine. This may lead to increased competition among browsers, making it essential for software testers to ensure their applications are compatible with multiple browsers. The release of Firefox Quantum may also require extensions to be rewritten using a new framework, which could be frustrating for users. However, this development is seen as a positive step towards healthier browser competition, ultimately benefiting users with improved user experiences and faster browsing speeds.