Imagus - The extension is intended to complement image features that (I think) is missing from Opera by...
Video Downloader for Facebook - Video Downloader for Facebook is the best-in-class FB video downloader for browsing and downloading the favorite video with a single tap.
Hover Zoom+ - Google Chrome extension for zooming images on mouse hover - extesy/hoverzoom
FreeGrabApp Facebook Video Download - Application for downloading Facebook videos fast and for free.
Hover Zoom - Enlarge thumbnails on mouse over.
FDOWN.net - Download Facebook videos and save them without using Java or installing software.