Imagus
The extension is intended to complement image features that (I think) is missing from Opera by…
18 Alternatives To Imagus
Amateur Voat Enhancements
AVE adds new functionalities and fixes to Voat.co.
Feedbro
Advanced Feed Reader - Read news & blogs or any RSS/Atom/RDF source. Feature highlights:
Image Max URL
Help find larger or original versions of images, including a customizable image popup feature
ImagePreviewer
This extension shows a popup with an image preview when hovering over link that points to an image file or a page with an image.
Inoreader
Dive into your favorite content. The content reader for power users who want to save time.
Mailvelope
Mailvelope open source project. OpenPGP in your browser.
Mouseover Popup Image Viewer
Shows larger version of thumbnails when moving mouse cursor over thumbnail.
Newsthin
Fast news anywhere
Papaly
Papaly is a simple social bookmarking tool to manage all your links.
Reddit Enhancement Suite
The Definitive Reddit Add-on
Reddit in MS Outlook Skin
Browse reddit without your boss knowing
Shaarli
Shaarli is a minimalist link sharing software you can install on your own website
SnoopSnoo
SnoopSnoo provides reddit user and subreddits analytics.
Thumbnail Zoom Plus
The official site of the Thumbnail Zoom Plus add-on for Firefox
Zoom
Zoom unifies cloud video conferencing, simple online meetings, group messaging, and a software-based conference room solution.
ezLinkPreview
Browse more efficiently: Preview links and images without leaving your current tab.
iFrame - Link Viewer
Preview any link in a pop-up frame without leaving current page (instead of opening a new tab), eliminating the need to go back and forth to navigate to other links.
Start
A network of PMs for people who want to get an MVP built