Fifteen years ago, two computer scientists sat at their desks in a research lab in what is today Telenor, Norway’s telecommunications incumbent, itching to begin a new project. They were going to build their own Web browser. Those first keystrokes would become Opera, the browser that has set — and continues to set — the standard for browser innovation. Jon von Tetzchner, the CEO of Opera Software, and Geir Ivarsřy began coding the original desktop Web browser in April 1994. Today, about 40 million people use Opera on their Windows, Mac and Linux computers.