* Opera Software had a root store program until fall 2013. Opera 14+ will use the root store provided by the OS and the list of EV-enabled roots maintained by Google. Opera < 12 use Opera’s online root store, hereafter based on NSS by Mozilla. To get certificates accepted by Opera, apply to the above-mentioned root store programs for the relevant OS. (Based on visit to http://www.opera.com/docs/ca/)
Roots in NSS are listed here – http://www.mozilla.org/en-US/about/governance/policies/security-group/certs/included/ and here: https://docs.google.com/spreadsheet/pub?key=0Ah-tHXMAwqU3dGx0cGFObG9QM192NFM4UWNBMlBaekE&single=true&gid=1&output=html.