Session Manager is a SeaMonkey and Firefox extension that allows you to save and restore the state of all windows.
Keep in mind that the Session Manager add-on replaces the SessionSaver extension and Tab Mix Plus' session manager.
Session Manager is an open source add-on designed to work with Mozilla Firefox 10.0 or later and SeaMonkey 2.7 or later.
What's New in This Release: [ read full changelog ]
· Fixed issue that would cause toolbar icons to be re-added to toolbar when opening new windows after first install if the user removed them. This would only occur until the browser was restarted.