Closetab.email is an extension that gives you the capability to quickly and efficiently close the tabs that you are working with. This is very useful when you have to keep switching back to your other tabs but don't want to close it completely because you know you'll need it back again soon. Now you can just switch to your closing tab, set a time, and click "Let me Read".
In order to make life easier for you, this extension can be set to remember and close the tabs that you're currently working with. After reading, you can turn the reminder off so that you don't have to worry about it and you can quickly click "Back to Work" to get back to your tab. You can also add tags to your pending reading list so that it doesn't get lost in your browser.
This extension can be set up to remember a list of tabs that you've read completely. You can add tags to each of those pages and it'll give you a reminder for those tags. This way, you won't have to worry about keeping track of them and losing them. It's very easy to use and it works for all the major browsers.