Otter Browser

Otter Browser
Otter Browser using Breeze style on KDE Plasma 5
Developer(s) Michał Dutkiewicz
Initial release December 11, 2013 (2013-12-11)
Stable release 0.9.95-RC5 (4 February 2018 (2018-02-04)[1]) [±]
Preview release
0.9.98 / January 1, 2018 (2018-01-01)
Written in C++
Operating system Unix-like (Linux, FreeBSD, OpenBSD), macOS, Microsoft Windows
Platform Qt, which embeds Chromium[2]
Type Web browser
License GPLv3

Otter Browser is a free and open-source web browser that aims to recreate aspects of Opera 12.x using Qt framework while keeping seamless integration with users' desktop environments.[3][4] Otter Browser is licensed under GPLv3.

The Qt WebEngine used by Otter is a wrapper around the Chromium browser core.[2]


Following the decision by the board to change focus at Opera Software towards quarterly profits, co-founder Jon von Tetzchner left the company. Opera then announced that it would switch from the Presto engine that it had developed to the WebKit rendering engine, also used by Google Chrome. It later followed Chrome again when it changed to the Blink rendering engine. Around the same time, the Opera community website My Opera was closed down. The new Opera left many of its users disgruntled.[5][6] Jon von Tetzchner announced a new place for the community that was left without a home by the removal of My Opera,, which he said would pave the road for a new company, Vivaldi Technologies in 2015 and a new browser, Vivaldi, in 2016 to revive the spirit of the old Opera. At this time, Michał Dutkiewicz also began creating Otter Browser.


  • Passwords manager
  • Addon manager
  • Content blocking
  • Spell checking
  • Customisable GUI
  • URL completion
  • Speed dial
  • Bookmarks and various related features
  • Mouse gestures
  • User style sheets

Planned features include a mail client (as module) and a BitTorrent module. A full list of planned features can be seen here:.[7]


Official website

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