Opera (web browser)
Opera is a web browser developed by Opera Software with over 200 million users worldwide. The browser handles common Internet-related tasks such as displaying web sites, sending and receiving e-mail messages, managing contacts, conversing on IRC, downloading files via Torrent, and reading web feeds. It is free for personal computers and mobile phones.
From its beginning, Opera used its proprietary Presto engine. However, in 2013 Opera switched to Google's new Blink engine. Some accepted this change happily, others refused to update from version 12.16 (the last Presto engine edition), while others began using the new Vivaldi browser, which was more recently created by the original designers of Opera.