Opera

Opera is a browser first released in 1995 as trialware and using an unnamed rendering engine, eventually in 2000 with Opera 5 it became ad sponsored, with the release of Opera 7 in 23 of January 2003 the in-house Presto engine was introduced and in 2005 with opera 8.5 the ads were removed, making Google search engine contracts the primary source of income of Opera Software. In 2013 Opera 15 launched, ditching the presto engine for Blink and other Chromium based technologies and giving it support for Chrome extensions in the process.