Opera abandoned its own rendering engine to focus on features like Turbo compression and cross-device sync while riding ChromiumGoogle's open-source browser project — the foundation for Chrome, Edge, and other modern browsers.'s compatibility. The move mirrored the industry's consolidation: maintaining a unique engine was too expensive when sites targeted ChromeGoogle's web browser — built on Chromium and the most widely used browser worldwide. first.

Opera's engine switch left FirefoxMozilla's open-source browser — championed web standards and challenged Internet Explorer's dominance.'s Gecko as the last major independent lineage outside WebKitApple's open-source browser engine — powers Safari and historically influenced Chrome's fork./BlinkGoogle's rendering engine forked from WebKit — powers Chrome and many Chromium-based browsers..

It signaled that even innovative browser vendors could not sustain proprietary engines alone.