If you're looking for a browser that's not Opera Browser, Brave is worth a look. It's a fast, private and secure alternative based on the Chromium browser foundation. It's got private search, an integrated AI assistant and a powerful VPN that protects all apps on your device. It also comes with default shields to block ads, trackers and cookies, so it's a good pick if you want to protect your privacy.
Another contender is SigmaOS. It's designed to help you be more productive with tools like workspaces, vertical tabs and a split-screen mode so you can multitask. It also has an ad-blocking browsing mode, focus mode and an AI engine called A1Kit for help that's aware of the context. SigmaOS is for macOS, but the developers plan to release it for iOS and Windows later.
If you want a browser that lets you mix apps, chat and AI into one shared workspace, Muddy offers a multiplayer twist. It's geared for teams to help you collaborate and get more work done with features like Infinite Rewind, Universal Commenting and Real-time Intelligence. Muddy is available for Mac, Windows, iOS and Android and works with any browser-based app.