Session Box is an online service that helps users to securely manage their online sessions. It allows users to open multiple tabs in a single session, and keeps these tabs synchronized across multiple devices. It also provides a secure environment for users to store their personal information, and allows them to use one-click login to quickly access their favorite websites. With Session Box, users can easily manage their online sessions, and also keep their personal information safe from unauthorized access. It also provides users with powerful tools to customize their online experience, such as creating custom themes and layouts, and setting up notifications for new activity.
It does not do the same thing at all. Session Box description: "Log in to multiple accounts on the same site simultaneously". This extension helps with tab management.