If you are in the habit of accumulating tabs, not able to close any of them then the browser would crash soon. Before that happen just get to know these tricks to manage that volley of tabs. Tabbed browsing is a curse and a blessing too. It has totally changed the way net surfing is done. Opening several tabs at a time has one major problem and that is excess which comes from the user. This is equal to collecting mails or even keeping every photo that you have clicked on local drive.
Do you actually need so much of it? It consumes lot of space and creates useless clutter of data. This leads to disorganization. On of the simple solution for this is to compartmentalize. In case you have some work then open tabs in that related window. It would allow you to minimize or even quit the group when you are done with them. All work related tabs would not be in view when say you are reading. You can close each one of them when you are done with one. There would be also limited content to read rather than never ending series.
You can also run two browsers. One is dedicated to tasks at hand and other is loaded with personal pages like social networking sites and Webmail.
To manage tabs all browsers have major inbuilt tools. You can bookmark all tabs. This would close tabs but can be opened quickly from there. You would not lose your pages if they are bookmarked. Never use synced tabs. You can organize bookmarks topic wise. Normally those users who hoard tabs have a bad habit of syncing tabs, so that you can access and see tabs which you have open on other devices.
Never use pinned tabs. Both Firefox and Chrome allows you to pin tabs by right-clicking them to shrink the actual tab size. However this is a good feature in some cases but not for tab hoarders as it creates room for accumulation.
Third-Party Tools for Browser Tabs: There are several browser extensions for Firefox and Chrome which whip the tabs into shape and several more to explore.