Opera is a web browser for Microsoft Windows, Android, iOS, macOS, and Linux operating systems, developed by Opera Software. Opera Software is a Norwegian software company publicly listed on the NASDAQ stock exchange, with the majority of ownership and control belonging to Chinese businessman Zhou Yahui, founder of Beijing Kunlun Tech which specialises in mobile games and Chinese cybersecurity company Qihoo 360. Opera is a Chromium-based browser using the Blink layout engine. It differentiates itself because of a distinct user interface and other features.
Opera was conceived at Telenor as a research project in 1994 and was bought by Opera Software in 1995. It was a commercial software for the first ten years and had its own proprietary Presto layout engine. The Presto versions of Opera received many awards, but Presto development ended after a milestone transition to Chromium in 2013.
There are also three mobile versions called Opera Mobile, Opera Touch and Opera Mini. A gaming browser called Opera GX was launched on 11 June 2019