Make Tabs Sticky In Firefox With Permatabs Firefox Plugin

PermaTabs is an interesting extension which adds the ability to turn tabs of your choice into permanent tabs ("permaTabs") that can't be closed, and stick around between sessions. Useful for keeping URLs you use often, always one tab away. Also, useful for picking up articles where you left off, between sessions.https://addons.mozilla.org/en-US/firefox/addon/2558