Tab Bucket saves the currently opened tabs to quickly restore them when desired.
Tag Archives | open tabs
Need to know more statistics about the webpage you are viewing? Check out the extension Tab Data (+Memory usage). It provides the user with tab related stats and memory usage.
dMTabCounter is an instantaneous tab counter. Allows you to check out how many tabs you have opened in any moment.
Have a lot of tabs open, but only need to find those that meet a certain criteria? The Firefox add-on named Tab Filter / Tab Search will give you that ability. Once installed, this extension lets you only show tabs that match the results you want to see.