OneTab is a Chrome extension that allows you to restrict the opening of tabs with the same domain name. With this extension, when you open a new URL that is in your configured list, it will check if there is already a tab open with the same domain name. If there is, the tab will be refreshed to the new URL instead of opening a new tab. If there is no tab open with the same domain name, the new URL will open in a new tab as usual.

OneTab also offers some options for customization. By right-clicking on the extension icon and clicking on options, you can configure your restricted URL list and enable notifications to show when this feature is triggered.

The latest version, v2023, brings some optimizations to the options page, fixes redundant notifications, resolves an undefined bug in daemon.js, and fixes a bug in the background trigger onSendHeader.

Overall, OneTab is a useful extension for managing multiple URLs and preventing the cluttering of your browser with unnecessary tabs.