Opera (web browser) layout engine of its competitor Google Chrome. Features of the Opera web browser include private browsing, tabbed browsing, download manager, mouse gestures and browser extensions. Opera began in 1994 as a research project at Telenor, the largest Norwegian telecommunications company. In 1995, it branched out into a separate company named Opera Software. Opera was first released publicly in 1996 with version 2.10, which only ran on Microsoft Windows. In an attempt to capitalize on the emerging market for Internet-connected handheld devices, a project to port Opera to mobile device platforms was started in 1998. Opera 4.0, released in 2000, included
Gazelle (web browser) Gazelle (web browser) Gazelle was a research web browser project by Microsoft Research, first announced in early 2009. The central notion of the project was to apply operating system (OS) principles to browser construction. In particular, the browser had a secure kernel, modelled after an OS kernel, and various web sources run as separate "principals" above that, similar to user space processes in an OS. The goal of doing this was to prevent bad code from one web source to affect the rendering or processing of code from other web sources. Browser plugins are also managed as principals. "Gazelle" had