I can't recommend software to your requirements however I thought I would mention that many chrome extensions can be used on Opera using -
https://addons.opera.com/en-gb/exten...me-extensions/
Install Chrome Extensions. by Opera Software. Rating: 4.5 Total number of ratings: 1176. Add to Opera. Install Chrome Extensions allows you to install extensions from Google Chrome Web Store in your Opera browser. You can install extensions only. Themes are not supported.
I use Opera at present too.