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Otter Browser

Otter Browser is a free, open-source desktop app for Windows, macOS and Linux. Otter Browser aims to recreate the best aspects of the classic Opera (12.x) UI using Qt5. It has 1,991 GitHub stars and is released under the GPL-3.0 license.

github.com/OtterBrowser/otter-browser (opens in a new tab)

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About Otter Browser

A browser controlled by the user, not vice-versa Otter Browser aims to recreate the best aspects of Opera 12 and to revive its spirit. We are focused on providing the powerful features power users want while keeping the browser fast and lightweight. We also learned from history and decided to release the browser under the GNU GPL v3.

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FAQ

Otter Browser FAQ

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Is Otter Browser free and open source?

Yes. Otter Browser's source code is public on GitHub under the GPL-3.0 license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.

How do I install Otter Browser?

Download the installer for Windows, macOS and Linux from its GitHub Releases page (latest: v1.0.03) or the project website.

Is Otter Browser still maintained?

The repository's most recent commit was on Oct 28, 2026. appsgit only lists apps whose repository had a commit in the last six months.