Mozilla Firefox vs Microsoft Edge in 2026

This is a comparison between the last major independent browser and the most feature-complete Chromium build. Firefox and Edge are aimed at different instincts: one at people who care where their browser comes from, the other at people who want the most tooling for the least setup.

Built-in productivity tools

Edge is the more capable browser as delivered. Split-screen browsing, Collections and workspace grouping are all built in, and Copilot sits in the sidebar to summarise pages and draft text. Firefox added native vertical tabs in version 136, so that gap has closed, but split view remains extension territory and there is no integrated AI assistant. If you keep a lot of tabs in play and want structure without assembling it yourself, Edge does more on day one, and it matches Firefox's top extensions score of 5 while doing so.

Where Firefox does more

Firefox's case is about independence and privacy. It runs Gecko, the only major engine not derived from Chromium or WebKit, so choosing it keeps a second implementation of the web alive. It is fully open source, so its privacy claims can be checked. It blocks trackers and fingerprinting by default and carries no telemetry pipeline into an advertising business. Edge scores 3 for privacy against Firefox's 4, and that gap understates the difference in posture: Edge includes tracker blocking and an ad blocker, but it also reports to Microsoft and works hard to keep you on Bing, on a Microsoft account and inside Windows features you did not ask for.

Extensions deserve a note. Both score 5, but for different reasons. Edge inherits the enormous Chrome Web Store; Firefox has a smaller library but still permits the extension APIs that let content blockers filter at full strength, which Manifest V3 restricts in every Chromium browser including Edge. If uBlock Origin operating without limits matters to you, Firefox is the only one of the two that offers it.

Both run on all five major platforms with sync, though Edge's Linux and Mac builds feel more like ports than native citizens.

Which should you choose?

Choose Edge if you are on Windows, use Microsoft 365, and want split view, Collections and an AI sidebar without hunting for extensions. It is the more productive browser out of the box and it costs nothing beyond accepting Microsoft's gravity.

Choose Firefox if you want an auditable, independent browser with real tracking protection and unrestricted content blocking, and you are willing to add the tab tooling yourself. The engine question is not abstract: every Chromium browser you choose, Edge included, hands a little more of the web's direction to Google.