Imagus - The extension is intended to complement image features that (I think) is missing from Opera by...
Chili Piper - Chili Piper is an intelligent calendar for Sales teams, to book their own meetings or set appointments for other teams.
Image Max URL - Help find larger or original versions of images, including a customizable image popup feature
Geekbot - Discover how to organise asynchronous stand up meetings in Slack and keep your team synced using Geekbot. Start your free trial today!
Thumbnail Zoom Plus - The official site of the Thumbnail Zoom Plus add-on for Firefox
Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.