Open in Wayback Machine is a very cool addition to the browser. A button and context menu item to open URL in the Wayback Machine, service to view previous versions of websites from archive.org.
What is this add-on all about? With it you can add the full URL or hostname of the current web page to the window title. Designed to help other applications identify the current window.
Having trouble coming up with a new password? The Password Engine extension is here to help. This lightweight add-on for Firefox will help you with coming up with a new password this is both safe and secure.
Tired of the Imgur’s loading gif? Now you can if you want change this one by the one you want!
What does TabSubmit Basic do for you? It makes forms open in new tabs if you’re holding down a meta key while you click.
Need to keep track of your email all the time? Simple Gmail Counter will do that! Conveniently notifies you of new and unread emails in your Gmail inbox through an icon in your Firefox toolbar.
Padded Corner Share Button lets you share any web page to either your Padded Corner Timeline or a Padded Corner page you admin.
Tab Bucket saves the currently opened tabs to quickly restore them when desired.
What does PhotoSelector do? It does only one simple thing: select all your own +1’d photos in albums view of Google+ Photos. Then do whatever you want with your own selected photos (e.g. download them).