Otter Browser

Spec sheet

Purpose

Otter Browser aims to recreate the best aspects of the classic Opera 12.x UI using Qt.Read 12 Oct 2026 · otter-browser.org

Intended users

The project describes its primary objective as serving power users who miss Opera after it dropped the Presto engine.Read 12 Oct 2026 · otter-browser.org

Audience

The project says it focuses on powerful features for power users while keeping the browser fast and lightweight.Read 12 Oct 2026 · github.com

Supported platforms

desktopRead 23 Sep 2026 · otter-browser.org

Free plan

YesRead 23 Sep 2026 · otter-browser.org

Support

The project points users to its official forum and international and Polish IRC channels for communication.Read 12 Oct 2026 · otter-browser.org

License

Otter Browser is released under the GNU GPL v3.Read 12 Oct 2026 · github.com

Browser engine

otherRead 23 Sep 2026 · otter-browser.org

Browser features

The project describes built-in content blocking, keyboard and mouse profiles, and managers for bookmarks, history, notes, and transfers.Read 12 Oct 2026 · otter-browser.org

Build

The browser is written primarily in C++ and uses the Qt framework.Read 12 Oct 2026 · github.com

Build dependencies

Building from source requires Qt 5.15.0 or newer, OpenSSL, GStreamer with codecs, and CMake 3.16.0 or newer.Read 12 Oct 2026 · github.com

Build requirements

Building from source requires Qt 5.15 or newer, OpenSSL 1.0 or newer depending on Qt, GStreamer 1.0 or newer with codecs, and CMake 3.16 or newer.Read 12 Oct 2026 · github.com

Built-in ad blocking

YesRead 23 Sep 2026 · otter-browser.org

Content blocking

The changelog documents content blocking profiles and the ability to add custom blocking rules.Read 12 Oct 2026 · github.com

Feeds

The changelog says the Feeds Reader includes Atom and RSS 2.0 parsers and category support.Read 12 Oct 2026 · github.com

Installation

Users can compile Otter Browser from source or use pre-compiled binaries.Read 12 Oct 2026 · github.com

Linux and BSD

Linux users can use an official AppImage, and the browser is also available in repositories for various Linux distributions and BSD systems.Read 12 Oct 2026 · github.com

Linux downloads

Linux users can download an official AppImage, and the browser is also available in repositories of Linux distributions and BSD systems.Read 12 Oct 2026 · github.com

macOS downloads

The official site lists DMG downloads for macOS.Read 12 Oct 2026 · otter-browser.org

Modularity

The project says the browser is designed to be modular, with an abstraction layer intended to support replacing components such as bookmark and history managers.Read 12 Oct 2026 · otter-browser.org

Notable limitation

The project says that it does not intend to reproduce every Opera feature, citing Unite and widgets as examples it considers infeasible.Read 12 Oct 2026 · otter-browser.org

Open source

YesRead 23 Sep 2026 · otter-browser.org

Portable mode

A portable version can be configured by placing an arguments.txt file containing --portable beside the browser executable.Read 12 Oct 2026 · github.com

Project activity

The official site’s 2026-10-05 weekly report lists seven commits by one author, no new issues, and 254 open issues including seven bugs.Read 12 Oct 2026 · otter-browser.org

Project status

The official site’s latest listed weekly report is dated 2026-10-05 and reports 254 open issues, including 7 bugs.Read 12 Oct 2026 · otter-browser.org

Proxy settings

The changelog documents multiple proxy configurations that can be assigned per page or host.Read 12 Oct 2026 · github.com

Support channels

The project lists an official forum and two IRC channels on Libera.Chat for community discussion.Read 12 Oct 2026 · otter-browser.org

Translations

The project uses Transifex for translations.Read 12 Oct 2026 · github.com

Windows

Windows users can download binary releases from SourceForge.Read 12 Oct 2026 · github.com

Windows downloads

The project directs Windows users to download binary releases from SourceForge.Read 12 Oct 2026 · github.com

Plans and prices

Every Otter Browser plan and price →

Where Specifiction places it

• Web browsers#48 of 1548.4