AddUp is a free Chrome add-on developed by joffrey.berrier. It is designed to provide users with a convenient way to add numbers across different tabs, whether it's calculating totals on their bank accounts or e-commerce websites.

With AddUp, users can easily accumulate sums between each tab, making it a handy tool for tracking expenses or managing finances. This extension simplifies the process of adding numbers, eliminating the need for manual calculations or switching between multiple tabs.

AddUp aims to enhance user productivity by streamlining number addition tasks, offering a seamless experience within the Chrome browser. Whether you're a frequent online shopper or someone who needs to keep a close eye on their finances, AddUp provides a practical solution for effortless number addition.