What is Otter?

Otter browser in action

Otter is a free open-source web browser that recreates the old Opera 12 browser experience. It is completely open-source project as it is released under the GPL-3.0 License.

Otter is written primarily in C++ and leverages Qt5 framework. The project receives constant updates that include new features, improvements, and bug fixes


  1. Windows
  2. Linux
  3. BSD
  4. macOS

You can also build it from source.




  1. https://otter-browser.org/
  2. https://github.com/OtterBrowser/otter-browser