It even lets you save annotations of the sites you visit. Opera also includes support for Bittorrent downloads, an intelligent tab system, and thumbnail previews, as well as the ability to control features by voice or keyboard. This excellent web browser based on Chromium has been evolving for years, becoming more comprehensive and allowing you not only to browse all your favorite websites, but also to manage and store your contacts, sync your profile in the cloud, or read the news through its own integrated service. Opera is, together with Mozilla Firefox and Google Chrome, one of the best ways to surf the Internet.