Opera Software ASA is a Norwegian software company, primarily known for its Opera family of web browsers. Across multiple platforms, Opera browsers have more than 350 million users worldwide. Opera Software is also involved in promoting Web standards through participation in the W3C. The company has its headquarters in Oslo, Norway and is listed on Oslo Stock Exchange. The company also has offices in Sweden, Poland, the People's Republic of China, Japan, South Korea, Australia, Russia, Ukraine, Iceland, Singapore and the United States. Opera's stated vision is "to deliver the best Internet experience on any device."

Opera is a web browser developed by Opera Software. The latest version is available for Microsoft Windows, , and Linux operating systems, and uses the Blink layout engine. An earlier version using the Presto layout engine is still available, and additionally runs on FreeBSD systems.