Save and restore the state of windows and tabs. It also supports automatic saving.
An extension to keep your web-sessions alive. Maintains active sessions of Web Applications, that have an inactivity timeouts. Based on Session Keeper by Guillaume Boudreau.
This addon let you create an incognito window which cookies get saved for the following session.
A simple session manager. You can quickly save your current browser state and reload it whenever necessary. This is not a replacement for Michael Kraft's "Session Manager", it's an unavoidable alternative in this difficult transition period.
Saves any number of tab sessions to use for later. Just open the menu, press "Save Current Session" and it saves the session on your current window!






This tool will change the session on crunchyroll.com to an american one when the site is visited from somewhere else.

Open SSH client sessions with a terminal emulator

Renames the Tab Title (Persistent across the sessions). Renaming to add custom words in tab titles makes it easy to search for tabs in the address bar.

Tab Master 5K replaces your New Tab page with a full-featured tabs, history, bookmarks, and sessions manager.

Delete history, local and session storage for the current webpage, just with one click ! Available in more than 30 different languages.
Only accept persistent cookies that were a result of user action, otherwise demote them to session cookies.
Monastery restricts your browsing session and blocks and limits time spent on a user-supplied blacklist.
A Firefox extension that allows you to start the debugging session with one click. Works with XHR and normal full requests. You can start debugging, tracing, profiling and change the idekey. Built using the new WebExtensions API.
This is a leisure kind of an add-on which helps you to stay awake during classes and study sessions. It turns the background into the 7 colours of the rainbow keeping the user still on the webPage- hopefully more focussed.
Screen sharing extension for 24sessions.com