Tab Defenders is a memory manager for Chrome that aims to reduce the browser's memory usage by automatically closing unused tabs. With this extension, you can free up precious memory and ensure that your system remains speedy and responsive.

One of the main features of Tab Defenders is its ability to close tabs after a specified duration. You can set a time period (in minutes) after which any background tab that hasn't been visited will be shut down. The URL of the closed tab is saved to storage, allowing you to recover it if needed. This mode is perfect for periodically cleaning up Chrome tabs while still having the option to retrieve them later.

The second mode of operation in Tab Defenders is based on learned usage patterns. The extension tracks your domain-wise habits and automatically shuts down tabs when it determines that the chance of you returning to them is negligible. This intelligent feature helps optimize memory usage without inconveniencing you.

If you accidentally close a tab that you wish to recover, Tab Defenders provides a convenient option to view your complete history. From the history tab, you can easily see closed tabs and recover them with a single click.

To ensure that certain domains are not automatically closed, you can whitelist them directly from the extension. This gives you control over which tabs should remain open even if they are inactive.

In terms of appearance, Tab Defenders offers two themes: a modern UI theme (default) and a more retro look. You can switch between the two by clicking the Tab Defenders button in the extension popup.

Tab Defenders was developed by Aman Ladia, Jean Laguerre, Anthony Mensah, William Lam, and Hung Bui of Stanford University. It is a free extension available for Chrome users who want to optimize their browsing experience and reduce memory usage.