Imagus - The extension is intended to complement image features that (I think) is missing from Opera by...

Fake Call and Sms - Fake Call and Sms app is a fake message sender and caller app that provides features through which you can receive as well as can send simulated messages to desired contacts.

Image Max URL - Help find larger or original versions of images, including a customizable image popup feature

Fake Text Message-Prank text app - Fake Text Message-Prank text app allows users to take screenshots of text messages from their favorite celebrities so they can share them on various social media platforms in order to prank other users.

Thumbnail Zoom Plus - The official site of the Thumbnail Zoom Plus add-on for Firefox

iPhoneFakeText - iPhoneFakeText is one of the best and most powerful tools for writing long & funny texts for iPhone devices.